南外集训 Day 10

The tenth day of intensive training at Nanjing Foreign Language School.
今天打比赛
第一二题水题
第三题的判断条件有误
导致卡90分

#include <bits/stdc++.h>
using namespace std;
int ans;
struct Err {
    int c, m;
} o, x;
int main() {
    cin >> o.c >> x.c >> o.m >> x.m;
    if ((o.c == 0 && x.c == 0) || (o.m == 0 && x.m == 0)) {
        cout << "0";
        exit(0);
    }
    if (x.c < o.c) {
        swap(x, o);
    }
    if ((o.c + 1) * x.m > x.c) {
        ans = x.c + o.c;
    } else {
        ans = (o.c + 1) * x.m + o.c;
    }
    cout << ans;
    return 0;
}

第四题死活过不去