纯代码

勾股定理：$x^{2}$+$y^{2}$=$z^{2}$

#include<bits/stdc++.h>
using namespace std;
int main() {
	int x,y;
    cin >> x >> y;
    double z = sqrt(pow(x,2)+pow(y,2));
    printf("%.2f",z);
	return 0;
}