Submission #333521

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Source Code Expand

#include<stdio.h>
#include<stdlib.h>
 
int main(void){
	int N, M, i, j, k, x, y, count, max;
	int *pair;
	max=1;
	
	scanf("%d %d", &N, &M);
	pair = (int *) calloc(N*N, sizeof(int));
	for(i=0;i<N;i++)pair[i*N+i]=1;
	
	for(i=0; i<M;i++){
	   scanf("%d %d", &x, &y);
	   pair[(x-1)*N+y-1]=1;
	   pair[(y-1)*N+x-1]=1;
	}
 
	/*for(i=0;i<N;i++){
		for(j=0;j<N;j++){
			printf("%d ",pair[i*N+j]);
		}
		printf("\n");
	}*/
	for(i=1; i<= (1<<N)-1; i++){
		int flag=1;
		count = 0;
		for(j=0; j<N; j++){
			if(i&(1<<j)){
				for(k=0; k<N; k++){
					if(i&(1<<k) && pair[j*N+k]==0) flag = 0;
				}
			}
		}
		if(flag==1) for(k=0;k<N;k++)if(i&(1<<k))count++;
		if(count > max) max = count;
	}
	printf("%d\n", max);
	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:9:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
./Main.c:14:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]

Judge Result