Submission #810549

#	Time	Username	Problem	Language	Result	Execution time	Memory
810549		rainboy	Bliskost (COI23_bliskost)	C11	100 / 100	182 ms	15868 KiB

Main

#include <stdio.h>

#define N	1000000

int main() {
	static char aa[N + 1], bb[N + 1];
	int n, q, i, d;

	scanf("%d%d%s%s", &n, &q, aa, bb);
	if (n == 1) {
		printf(aa[0] == bb[0] ? "da\n" : "ne\n");
		while (q--) {
			static char s[2];

			scanf("%d%s", &i, s), i--;
			aa[i] = s[0];
			printf(aa[0] == bb[0] ? "da\n" : "ne\n");
		}
	} else {
		d = 0;
		for (i = 0; i < n; i++)
			d = (d + (aa[i] - 'a') * (i % 2 == 0 ? 1 : -1)) % 26;
		for (i = 0; i < n; i++)
			d = (d - (bb[i] - 'a') * (i % 2 == 0 ? 1 : -1)) % 26;
		printf(d == 0 ? "da\n" : "ne\n");
		while (q--) {
			static char s[2];

			scanf("%d%s", &i, s), i--;
			d = (d - (aa[i] - 'a') * (i % 2 == 0 ? 1 : -1)) % 26;
			aa[i] = s[0];
			d = (d + (aa[i] - 'a') * (i % 2 == 0 ? 1 : -1)) % 26;
			printf(d == 0 ? "da\n" : "ne\n");
		}
	}
	return 0;
}

Compilation message (stderr)

Main.c: In function 'main':
Main.c:9:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%d%d%s%s", &n, &q, aa, bb);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:15:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |    scanf("%d%s", &i, s), i--;
      |    ^~~~~~~~~~~~~~~~~~~~
Main.c:29:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |    scanf("%d%s", &i, s), i--;
      |    ^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 12 / 12
• Subtask 5: 17 / 17
• Subtask 6: 43 / 43