---

pairs=[
(142.53,206.8308),(215.69,219.386),(227.11,215.6092),(223.28,220.352),(204.25,228.0964),(197.55,226.5996),(234.19,220.5484),(293.31,214.2732),
(187.72,209.0896),(218.87,215.2988),(204.5,206.9288),(232.2,219.9888),(256.3,213.3496),(191.68,208.0576),(174.06,215.5992),(231.71,209.8124),
(200.43,215.7708),(144.03,210.3852),(235.73,221.3012),(219.72,211.6656),(189.3,224.0808),(175.78,209.38),(260.31,217.9644),(186.96,209.1648),
(213.05,218.4068),(181.61,207.0596),(279.59,220.3676),(138.88,216.352),(226.76,222.392),(169.34,211.4264),(223.84,214.5856),(204.17,203.546),
(256.76,229.1024),(258.46,217.996),(233.67,218.742),(202.9,216.0808),(214.04,207.1184),(243.33,216.4692),(200.6,214.1936),(228.73,221.6452),
(222.58,212.7496),(254.01,217.3956),(171.77,219.4532),(156.68,216.1616),(205.34,227.9576),(228.95,230.5052),(197.44,213.2704),(133.32,210.7824),
(248.1,214.7784),(241.54,220.8808),(252.43,219.2716),(237.82,216.9208),(196.71,216.5148),(163.68,214.9344),(240.23,220.838),(230.68,226.7824),
(245.59,221.302),(186.05,220.2164),(276.94,213.2152),(200.5,213.0952),(266.73,224.1444),(245.33,209.3012),(233.66,209.4968),(289,226.8208),
(205.97,223.5956),(280.61,221.1764),(278.13,225.5316),(222.41,213.5204),(249.93,217.6932),(301.74,225.8616),(202.85,216.002),(230.69,220.0916),
(218.9,200.3528),(204.16,210.8416),(236.49,225.5556),(207.43,224.9116),(249.17,222.6836),(276.72,217.152),(155.28,212.3424),(243.54,221.4408),
(177.9,216.0216),(226.04,218.3024),(176.06,214.9976),(194.23,219.9388),(233.41,215.0356),(225.41,224.8724),(265.12,223.3792),(209.77,216.5476),
(271.62,224.8296),(156.27,217.1916),(199.71,226.1964),(224.2,210.2416),(180.02,211.3064),(201.53,217.8692),(283.13,230.8484),(181.04,213.5744),
(250.09,229.1908),(274.51,222.6412),(249.98,223.916),(215.25,216.7668),(280.61,218.7188),(201.75,217.8396),(150.73,219.1396),(275.53,215.962),
(219.74,216.6008),(196.22,217.3496),(198.21,220.4532),(214.16,200.6624),(227.04,214.0032),(251.88,210.9264),(259.48,220.5904),(182.46,219.1608),
(208.52,195.5408),(266.85,215.7012),(172.17,211.3476),(183.34,210.652),(163.19,214.646),(192.93,217.2948),(222.72,221.2128),(180.24,221.424),
(213.03,220.6332),(259.15,217.6012),(192.24,216.048),(202.62,200.7576),(226.59,218.9868),(237.35,216.662),(240.84,216.1392),(246.43,220.174),
(214.65,215.1876),(284.65,224.3524),(246.47,229.9868),(231.58,219.34),(207.07,211.8028),(226.21,225.0676),(217.58,220.1432),(235.24,218.7952),
(236.75,216.6668),(185.8,219.256),(265.73,223.2116),(155.22,206.292),(207.04,213.6448),(243.26,217.7336),(185.66,209.7752),(191.35,214.8028),
(203.2,207.6256),(178.89,219.3732),(209.04,214.1952),(201.16,221.4256),(221.26,219.2248),(272.5,217.2616),(249.86,213.1688),(189.23,216.6476),
(239.89,219.2116),(204.27,221.0988),(182.61,206.8212),(247.84,216.2848),(221.09,219.5924),(277.57,214.8628),(182.91,205.3644),(200.36,218.7056),
(163.62,211.7736),(232.32,213.7152),(280.8,212.8608),(145.89,215.7204),(229.13,213.242),(274.61,223.394),(282.73,210.3556),(202.71,213.798),
(219.88,226.4752),(275.42,224.3768),(239.96,223.544),(225.02,223.1192),(231.55,217.4956),(267.07,224.0908),(211.79,210.4748),(245.65,219.6436),
(203.07,226.1292),(224.49,221.5428),(193.01,208.13),(205.04,218.6048),(196.36,213.7936),(224.57,223.3412),(214.83,223.8348),(255.24,200.856),
(235.11,211.9932),(278.16,217.2864),(311.26,220.2616),(223.27,212.3452),(129.21,203.3796),(272.87,215.558),(232.07,219.8876),(219.17,209.33),
(252.65,220.5188),(205.87,221.3356),(237.34,212.7448),(169.44,213.5328),(218.95,220.1308),(190.35,217.902),(195.95,211.5308),(191.24,217.4576),
(254.29,212.098),(218.51,232.1708),(171.78,221.4408),(198.86,208.1912),(212.55,209.1804),(228.6,214.488),(249.06,222.3432),(316.1,228.5384),
(246.27,211.7964),(243.26,216.4376),(257.83,216.1084),(265.39,224.0332),(253.5,212.7192),(218.66,208.148),(258.87,222.6204),(245.04,220.9248),
(241.85,218.234),(260.47,215.4748),(229.03,216.6076),(225.07,216.1804),(192.9,227.604),(181.39,215.4988),(182.99,216.8972),(217.68,213.6576),
(155.25,208.7892),(229.41,217.7076),(249.94,227.9464),(244.28,212.1488),(192.26,216.7784),(202.04,214.4432),(266.29,221.65),(237.21,223.2996),
(181.02,216.3768),(177.29,204.0932),(266.83,230.1676),(281.93,214.7972),(213.88,219.016),(167.19,213.1932),(226.55,222.3836),(213.85,217.114),
(226.04,208.184),(221.17,207.8164),(214.24,215.5456),(213.98,215.2088),(206.4,216.1248),(253.1,213.2312),(238.17,209.1108),(217.65,215.2308),
(216.46,216.2488),(187.01,213.4772),(185.31,218.1036),(203.88,223.5312),(226.36,217.9024),(242.96,212.6144),(235.46,227.1464),(226.91,209.3036),
(201.69,213.3252),(258.53,203.8484),(285.05,208.8644),(257.93,221.354),(314.47,219.4108),(178.3,213.2632),(208.96,217.9936),(215.75,223.7084),
(188.61,214.5108),(212.67,216.5004),(201.38,210.4424),(214.23,213.0012),(221.42,219.9032),(191.38,222.8968),(162.23,216.47),(306.93,228.7476),
(268.45,212.7028),(277.15,211.5724),(253.6,207.6256),(172.35,230.574),(237.62,208.964),(228.77,203.5028),(215.23,219.2812),(224.05,231.6244),
(187.63,214.7788),(260.3,211.7624),(160.42,200.6056),(228.87,221.3916),(257.55,220.0908),(193.15,220.7596),(224.18,224.9288),(243.96,225.6912),
(256.59,223.8732),(203.28,206.8416),(213.81,221.7396),(180.06,210.7896),(221.11,210.0988),(187.73,214.8692),(172.59,212.7564),(260.8,213.7696),
(132.61,218.0596),(183.02,217.628),(213.45,219.5268),(215.55,212.862),(176.45,220.4276),(281.35,219.8524),(157.8,202.104),(187.42,211.18),
(205.57,209.9764),(212.45,208.1108),(155,211.7936),(227.48,217.3808),(228.93,211.3428),(260.66,226.0424),(166.51,214.0012),(249.2,210.56),
(184.61,228.8564),(260.09,216.3524),(234.02,216.2312),(232.48,213.7792),(215.57,224.7092),(137.43,206.5788),(251.83,217.2796),(194.44,205.0576),
(241.93,236.218),(217.35,218.1756),(176.02,214.7272),(163.22,218.4872),(300.89,220.9892),(248.89,228.8932),(286.34,215.1752),(201.95,233.0636),
(248.97,229.0884),(237.42,214.812),(225.55,231.3388),(201.84,216.576),(203.17,216.2548),(201.29,212.378),(208.09,208.6852),(203.53,222.5956),
(215.99,227.8268),(224.91,222.5868),(183.69,215.3892),(235.87,213.1084),(219.5,219.8552),(212.9,208.3016),(176.94,217.7784),(199.64,210.5072),
(150.93,218.5716),(206.69,217.2596),(220.34,215.7224),(236.88,223.1616),(277.26,215.388),(199.22,218.7848),(173.48,209.8736),(201.32,212.3024),
(238.71,208.8828),(191.37,226.3812),(269.21,212.6756),(203.45,210.9188),(232.33,220.1476),(217.74,225.1032),(233.31,223.566),(247.59,224.0508),
(226.78,230.6776),(254.29,222.658),(239.23,213.7228),(244.99,215.4508),(277.06,214.1896),(150.92,208.9904),(240.77,222.1652),(203.02,202.1752),
(267.78,216.7752),(198.57,207.6036),(219.18,217.74),(286.1,221.7416),(182.9,211.0856),(211.58,210.9848),(223.23,225.3228),(152.52,222.552),
(230.1,211.764),(219.08,220.0592),(164.91,205.086),(228.29,229.9796),(277.42,214.2712),(198.08,212.5472),(249.37,214.09),(195.16,214.5328),
(284.9,223.9304),(176.4,227.3856),(220.49,196.7684),(239.02,223.5256),(223.93,222.106),(213.17,210.4916),(205.46,206.7176),(164.09,208.5764),
(196.8,212.4672),(238.85,209.7332),(242.33,218.9444),(199.52,220.0544),(242.61,216.9108),(262.03,219.2716),(238.2,222.0048),(229.48,217.1056),
(259.03,217.5292),(266.76,217.0512),(173.27,210.3068),(293.03,219.686),(275.89,214.594),(236.09,213.5972),(242.67,215.5596),(265.35,212.934),
(244.78,217.2856),(230.39,211.094),(169.3,213.2104),(209.84,227.7632),(201.01,223.042),(226.14,222.8184),(178.58,221.9336),(212.93,223.1444),
(236.49,221.562),(213.91,215.5804),(155.62,207.8248),(241.93,220.4164),(255.75,213.99),(233.61,220.8516),(274.22,207.164),(241.3,220.9288),
(243.63,224.3148),(266.17,210.6628),(270.33,213.7284),(225.18,218.0952),(242.19,225.8028),(247.1,222.3608),(225.11,224.7836),(224.77,212.9908),
(249.89,216.3476),(267.09,215.1156),(261,219.8256),(227.53,212.7652),(289.83,213.462),(234.32,215.84),(181.27,228.9244),(276,210.8544),
(194.36,214.0016),(300.93,223.314),(267.29,219.146),(239.42,221.6216),(249.67,206.8348),(263,219.4064),(261.57,226.0404),(168.32,206.7584),
(248.84,217.7744),(208.11,219.7548),(187.17,213.3108),(226.39,212.8444),(248.18,221.8376),(251.02,212.38),(225.11,228.2876),(203.15,213.4892),
(185.67,210.39),(232.15,219.4972),(185.27,211.5548),(220.77,211.938),(260.02,225.7576),(227.78,208.2632),(182.03,216.6956),(197.73,219.8676),
(214.12,224.4688),(195.69,216.6084),(129.75,209.4492),(208.23,205.1484),(240.56,214.7264),(254.8,227.9968),(243.28,219.424),(260.87,216.0188),
(218,205.6064),(262.5,196.644),(202.43,218.7116),(196.49,214.2788),(167.5,205.1128),(260.18,204.7976),(262.15,219.4972),(211.87,204.9676),
(221.46,215.8728),(185.11,220.8988),(227.11,216.5212),(200.89,221.5684),(216.93,218.8308),(211.71,222.2316),(156.86,212.1752),(232.2,204.0432),
(254.9,216.2024),(167.11,214.4668),(165.97,205.9924),(257.08,222.5488),(191.67,219.9804),(225.73,208.4212),(207.29,212.5988),(208.12,218.968),
(256.5,216.9384),(194.25,211.9332),(229.58,216.0632),(174.35,210.83),(240.71,219.3116),(228.5,214.1672),(297.89,220.6292),(257.8,221.9632),
(231.35,225.3116),(236.29,218.6932),(223.26,222.9816),(254.68,221.0224),(204.74,220.772),(260.52,217.512),(244.97,217.322),(219.82,216.364),
(259.65,222.4788),(219.24,222.8304),(249.25,222.5524),(224.35,211.4188),(212.23,204.8668),(168.83,210.446),(216.02,221.0024),(228.71,230.1212),
(226.43,219.2012),(232.47,210.3228),(242.13,209.0196),(197.74,222.4984),(224.23,204.262),(328.23,214.3836),(218.42,216.7112),(191.14,220.9288),
(195.13,221.4724),(264.41,217.7156),(200.77,213.01),(195.98,216.7256),(267.45,215.2452),(251.91,216.2844),(218.43,215.982),(206.45,214.1012),
(220.98,218.9736),(236.14,217.7176),(251.87,221.0444),(175.52,216.0608),(255.38,218.0168),(205.39,212.11),(235.77,206.9508),(245.63,219.4124),
(211.42,224.9272),(198.5,214.5224),(234.03,218.3724),(219.73,211.8004),(182.92,210.4912),(259.67,218.39),(210.73,213.946),(229.04,213.9392),
(205.81,222.5332),(204.98,223.0184),(236.69,221.7908),(188.88,211.6704)]

n=len(pairs)
x=[a for a,b in pairs]
y=[b for a,b in pairs]

mx=sum(x)/n
my=sum(y)/n
sx=sum((i-mx)*(i-mx) for i in x)
sy=sum((i-my)*(i-my) for i in y)
sxy=sum((x[i]-mx)*(y[i]-my) for i in range(n))

r=sxy/(sx*sy)**0.5
t=r*((n-2)/(1-r*r))**0.5
p=0.0
ans=1

print(n)
print(r)
print(t)
print(p)
print(ans)