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Submission #319325

# Submission time Handle Problem Language Result Execution time Memory
319325 2020-11-04T19:50:00 Z gustason Trol (COCI19_trol) C++14
50 / 50
 1 ms 364 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long llint;

int q;

int main(void) {
  scanf("%d", &q);
  while (q--) {
    llint l, r;
    scanf("%lld%lld", &l, &r);
    llint tot = r - l + 1;
    llint sol = (tot / 9) * 9 * 10 / 2;
    for (int i = 0; i < tot % 9; ++i) {
      int add = (int) ((l + i) % 9);
      if (add == 0) add = 9;
      sol += (llint) add;
    }
    printf("%lld\n", sol);
  }
  return 0;
}

Compilation message

trol.cpp: In function 'int main()':
trol.cpp:10:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |   scanf("%d", &q);
      |   ~~~~~^~~~~~~~~~
trol.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   13 |     scanf("%lld%lld", &l, &r);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct