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Submission #903976

# Submission time Handle Problem Language Result Execution time Memory
903976 2024-01-11T15:53:25 Z vjudge1 Trol (COCI19_trol) C++17
50 / 50
 1 ms 348 KB 
#include<bits/stdc++.h>
using namespace std;
long long calc(long long n){
  long long cnt = n / 9;
  long long res = cnt * 45 + (n % 9) * (n % 9 + 1) / 2;
  return res;
}
int main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int q;
  cin >> q;
  while(q--){
  	long long l, r;
  	cin >> l >> r;
  	cout << calc(r) - calc(l - 1) << '\n';
  }
}

Subtask #1
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct