Submission #6858967

---

Source Code Expand

#include<cstdio>
#include<cstring>
#include<cmath>

char mmap[10][10];
int x[10],i,flag;

void dfs(int pos);
void print();
bool pd(int a,int b);

int main()
{
	for(i=1;i<=8;i++)
	{
		for(int j=1;j<=8;j++)
		{
			scanf("%c",&mmap[i][j]);
			if(mmap[i][j]=='Q')
				x[i]=j;
		}
		getchar();
	}
	dfs(1);
	if(!flag)
		printf("No Answer\n");
	return 0;
}

void dfs(int pos)
{
	if(pos==9)
	{
		print();
		flag=1;
		return;
	}
	if(x[pos])dfs(pos+1);
	else
	{
		for(int j=1;j<9;j++)
			if(!flag&&pd(j,pos))
			{
				x[pos]=j;
				dfs(pos+1);
				x[pos]=0;
			}
	}
}

bool pd(int a,int b)
{
	for(int j=1;j<9;j++)
		if(j!=b&&x[j]&&(x[j]==a||fabs(a-x[j])==fabs(b-j)))
			return 0;
	return 1;
}

void print()
{
	for(i=1;i<9;i++)
	{
		for(int j=1;j<9;j++)
			if(x[i]==j)
				printf("Q");
			else
				printf(".");
		printf("\n");
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:18:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf("%c",&mmap[i][j]);
                           ^

Judge Result