A_Minutes_Before_the_New_Year.cpp

  #include<bits/stdc++.h>
  using namespace std;
  #define all(x) (x).begin(),(x).end()
  #define sz(x) (int)(x).size()
  const long double EPS = 1e-14;
  const int maxn = 100500;
  const int mod = 1e9 + 7;
  
  
  int main(){
      ios::sync_with_stdio(0);
      cin.tie(0); cout.tie(0);
      int t;
      cin >> t;
      while(t--){
          int h, m;
          cin >> h >> m;
          cout << (23 - h) * 60 + 60 - m << '\n';
      }
  
      return 0;
  }