#include <bits/stdc++.h>

using namespace std;


int main() {
    int a, b, c;
    while (cin >> a >> b >> c) {
        bool flag = false;
        if (a + b == c) flag = true;
        else if (a - b == c || b - a == c) flag = true;
        else if (a * b == c) flag = true;
        else if ((a / b == c && a % b == 0 )|| (b / a == c && b % a == 0)) flag = true;
        if (flag) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
}

若你用float能直接过

#include <bits/stdc++.h>

using namespace std;


int main() {
    double a, b, c;
    while (cin >> a >> b >> c) {
        bool flag = false;
        if (a + b == c) flag = true;
        else if (a - b == c || b - a == c) flag = true;
        else if (a * b == c) flag = true;
        else if (a / b == c || b / a == c) flag = true;
        if (flag) cout << "YES" << endl;
        else cout <&l...