洛谷题目 P1089
// https://www.luogu.com.cn/problem/P1089#include <iostream>
using namespace std;
int main() {
int a, sum = 0, money = 0, i;
bool b = true;
for (i = 1; i <= 12; i++) {
cin >> a;
money += 300;
money -= a;
if (money >= 100) {
sum += money / 100;
}
else if (money < 0) {
cout << -i;
b = false;
break;
}
money %= 100;
}
if (b) {
cout << money + sum * 120;
}
return 0;
}
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