제출 #826512

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
826512		rainboy	Football (info1cup20_football)	C11	49 / 100	25 ms	1236 KiB

football

#include <stdio.h>

int main() {
	int t;

	scanf("%d", &t);
	while (t--) {
		int n, k, a, x;

		scanf("%d%d", &n, &k);
		x = 0;
		while (n--) {
			scanf("%d", &a);
			x ^= a;
		}
		printf(x & k * 2 - 1 ? "1" : "0");
	}
	printf("\n");
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

football.c: In function 'main':
football.c:16:20: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   16 |   printf(x & k * 2 - 1 ? "1" : "0");
      |              ~~~~~~^~~
football.c:6:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    6 |  scanf("%d", &t);
      |  ^~~~~~~~~~~~~~~
football.c:10:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |   scanf("%d%d", &n, &k);
      |   ^~~~~~~~~~~~~~~~~~~~~
football.c:13:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |    scanf("%d", &a);
      |    ^~~~~~~~~~~~~~~

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• Subtask 2: 0 / 8
• Subtask 3: 0 / 11
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