题目描述

样例

#include<cstdio>
#include<iostream>
#include<cmath>
using namespace std;
int main(){
    int n;
    scanf("%d",&n);
    int up1=sqrt(n/4);
    for(int i=0;i<=up1;i++){
        int up2=sqrt((n-i*i)/3);
        for(int j=i;j<=up2;j++){
            int up3=sqrt((n-i*i-j*j)/2);
            for(int k=j;k<=up3;k++){
                int down=n-i*i-j*j-k*k;
                int x=sqrt(down);
                if(x*x==down){
                    printf("%d %d %d %d",i,j,k,x);
                    return 0;
                }
            }
        }
    }
    return 0;
}