oj.uz

Submission #441667

# Submission time Handle Problem Language Result Execution time Memory
441667 2021-07-05T18:03:55 Z rainboy Prosjecni (COCI16_prosjecni) C
120 / 120
 2 ms 332 KB 
#include <stdio.h>

int main() {
	int n, i, j, a;

	scanf("%d", &n);
	if (n <= 2) {
		printf(n == 1 ? "1\n" : "-1\n");
		return 0;
	}
	a = n * (n - 1) / 2 + 1;
	for (i = 0; i < n; i++) {
		for (j = 0; j < n; j++)
			printf("%d ", (i < n - 1 ? i + 1 : a - 1) * a + (j < n - 1 ? j + 1 : a - 1));
		printf("\n");
	}
	return 0;
}

Compilation message

prosjecni.c: In function 'main':
prosjecni.c:6:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    6 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~

Subtask #1
120.0 / 120.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 272 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct