#include<stdio.h> int main(){ int n,num=1,i,j,e,total,k,h; char c; scanf("%d %c",&n,&c); if(n!=0){ h=num*num*2-1; while(h<=n){ num++; h=num*num*2-1; } num--; e=num; total=1+2*(num-1); } else{ printf("0"); return 0...
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