Submission #1213708

#TimeUsernameProblemLanguageResultExecution timeMemory
1213708sudo_beeTrol (COCI19_trol)C++20
0 / 50
1093 ms328 KiB
#include <iostream>

using namespace std;

typedef long long llint;

int q;

int value(llint x) {
  if (x < 10) return (int) x;
  llint sum = 0;
  while (x) {
    sum += (llint) (x % 10);
    x /= 10;
  }
  return value(sum);
}

int main(void) {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);

  cin >> q;
  while (q--) {
    llint l, r;
    cin >> l >> r ;
    int sol = 0;
    for (llint i = l; i <= r; ++i) {
      sol += value(i);
    }
    cout << sol;
  }
  return 0;
}
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