总体思路:把时间全部转换为分钟,然后………………自己脑补
#include<bits/stdc++.h>
using namespace std;
long long a, b, c, s, ans;
int main () {
cin >> a >> b >> c;
s = a * 24 * 60 + b * 60 + c;
ans = 11 * 24 * 60 + 11 * 60 + 11;
if (ans > s) cout << -1 << endl;
else cout << s - ans << endl;
return 0;
}