[백준] 2475번 : 검증수 - C++

https://www.acmicpc.net/problem/2475

#include <iostream>

using namespace std;

int main() {
    int a,b,c,d,e;
    cin >>a>>b>>c>>d>>e;
    int sum=a*a+b*b+c*c+d*d+e*e;
    cout << sum%10;
}