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Submission #480029

# Submission time Handle Problem Language Result Execution time Memory
480029 2021-10-14T11:49:43 Z rainboy Trol (COCI19_trol) C
50 / 50
 1 ms 204 KB 
#include <stdio.h>

long long sum(long long n) {
	return (n / 9) * 45 + (n % 9) * (n % 9 + 1) / 2;
}

int main() {
	int q;

	scanf("%d", &q);
	while (q--) {
		long long l, r;

		scanf("%lld%lld", &l, &r);
		printf("%lld\n", sum(r) - sum(l - 1));
	}
	return 0;
}

Compilation message

trol.c: In function 'main':
trol.c:10:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |  scanf("%d", &q);
      |  ^~~~~~~~~~~~~~~
trol.c:14:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |   scanf("%lld%lld", &l, &r);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct