Submission #2703172

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Source Code Expand

#include<stdio.h>

long n,m;
int main() {
	scanf("%ld %ld", &n, &m);
	if (n == 1 ){
		if (m == 1) {
			printf("1");
		}
		else {
			printf("%ld", m - 2);
		}
	}
	else if (m == 1) {
		if (n == 1) {
			printf("1");
		}
		else {
			printf("%ld", n - 2);
		}
	}
	else {
		printf("%ld", (n - 2)*(m - 2));
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:5:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%ld %ld", &n, &m);
                          ^

Judge Result