Submission #69019

#	Time	Username	Problem	Language	Result	Execution time	Memory
69019		imsifile	Judge Against Wrong Code (FXCUP3_judge)	C11	100 / 100	446 ms	9964 KiB

judge

#include<stdio.h>

int X, D, C;
int ors[1<<20], usr[1<<20], bm;
char st[22], chk[505050];

int main(){
	scanf("%d", &X); bm=(1<<X)-1;
	scanf("%d", &D);
	for(int i=D; i--;){
		scanf("\n%s", st);
		int su=0;
		for(int j=0; j<X; j++) if(st[j]=='o') su|=1<<j;
		ors[su]=su;
	}
	scanf("%d", &C);
	for(int i=C; i--;){
		chk[i+1]='x';
		scanf("\n%s", st);
		int su=0;
		for(int j=0; j<X; j++) if(st[j]=='x') su|=1<<j;
		usr[su]++;
	}
	for(int i=0; i<X; i++){
		for(int j=0; j<=bm; j++){
			if(j&(1<<i)) continue;
			ors[j^(1<<i)] |= ors[j];
			usr[j^(1<<i)] += usr[j];
		}
	}
	for(int j=0; j<=bm; j++) if(ors[j]==j) chk[C-usr[bm^j]]='o';
	puts(chk+1);
	return 0;
}

Compilation message (stderr)

judge.c: In function 'main':
judge.c:8:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &X); bm=(1<<X)-1;
  ^~~~~~~~~~~~~~~
judge.c:9:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &D);
  ^~~~~~~~~~~~~~~
judge.c:11:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("\n%s", st);
   ^~~~~~~~~~~~~~~~~
judge.c:16:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &C);
  ^~~~~~~~~~~~~~~
judge.c:19:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("\n%s", st);
   ^~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 39 / 39
• Subtask 3: 51 / 51