Submission #258411

#	Time	Username	Problem	Language	Result	Execution time	Memory
258411		ipaljak	Trol (COCI19_trol)	C++14	50 / 50	0 ms	256 KiB

trol

#include <cstdio>

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 (stderr)

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

• Subtask 1: 50 / 50