求xdmhelp看一下，写不来。

#include<stdio.h>
#include<math.h>
int main() {
    freopen("SC3_1C.in","r",stdin);
    freopen("SC3_1C.out","w",stdout);

    int m,n,x,y;
    scanf("%d %d",&m,&n);
    x=m+n;
    y=abs(m-n);
    if((int)sqrt(x)==sqrt(x) && (int)sqrt(y)==sqrt(y)) {
        printf("Yes");
    } else {
        printf("No");
    }
    return 0;
}

觉得有用的话采纳一下哈