Submission #35351769

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Source Code Expand

#include <cstdio>
using namespace std;
int cnt=0,n;
void otp(const int x){
	printf("%d ",x);
	if(++cnt==n)
		cnt=0,putchar('\n');
}
int main(){
	scanf("%d",&n);
	const int m=n*n;
	if(n>=6){
		for(int i=1; i<=m; i+=2)
			if(i>6*n-5||(i%3!=1))
				otp(i);
		for(int i=0; i<n; ++i)
			otp(6*i+1);
		for(int i=n; i; --i)
			otp(6*i-4);
		for(int i=2; i<=m; i+=2)
			if(i>6*n-4||(i%3!=2))
				otp(i);
		return 0;
	}
	if(n==3){
		puts("9 5 4");
		puts("3 7 2");
		puts("1 8 6");
		return 0;
	}
	if(n==4){
		puts("9 1 8 10");
		puts("11 7 2 12");
		puts("13 3 6 14");
		puts("15 5 4 16");
		return 0;
	}
	if(n==5){
		puts("11 13 9 6 24");
		puts("15 17 5 4 22");
		puts("19 21 7 2 20");
		puts("23 1 8 14 16");
		puts("25 3 12 10 18");
		return 0;
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:10:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   10 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~

Judge Result