Submission #1415552

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Source Code Expand

#include <stdio.h>

int n;
int a[100000];

int main(){

	int i;

	scanf("%d", &n);
	for(i = 0; i < n; i++){
		scanf("%d", &a[i]);
	}

	int search_num = a[0];
	int count = 0;
	while(count < n){
		count++;
		if(search_num == 2)
			break;
		search_num = a[search_num-1];
	}

	if(count >= n){
		printf("-1\n");
	} else {
		printf("%d\n",count);
	}
	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:10:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ^
./Main.c:12:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ^

Judge Result