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inp = require('fs').readFileSync('/dev/stdin', 'utf8').trim().split('\n')
l = inp.shift().split(' ')
a = l.shift() * 1
b = l.shift() * 1 
c = l.shift() * 1
ab = module.exports.BigNumber(a).squareRoot()
bb = module.exports.BigNumber(b).squareRoot()
cb = module.exports.BigNumber(c).squareRoot()
console.log(ab.plus(bb).lt(cb) ? "Yes": "No")