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10 lines
190 B
C++
10 lines
190 B
C++
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#include <stdio.h>
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#include <math.h>
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int main(){
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int n,m;
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while(scanf("%d%d",&n,&m),n,m){
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double x=sqrt(n*n-4*m);
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printf((int) x==x?"Yes\n":"No\n");
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}
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}
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