Submission #1131245

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Source Code Expand

#include <cstdio>
#include <cstring>
#include <cmath>
#include <algorithm>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <cassert>
using namespace std;
#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef long long ll;
typedef pair<int,int> PII;
const ll mod=1000000007;
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
// head

const int N=510;
int n,col[N],row[N];
char s[N][N];
int main() {
	scanf("%d",&n);
	rep(i,0,n) {
		scanf("%s",s[i]);
		rep(j,0,n) {
			col[j]+=(s[i][j]=='#');
			row[i]+=(s[i][j]=='#');
		}
	}
	bool emp=1;
	rep(i,0,n) if (row[i]!=0) emp=0;
	if (emp) {
		puts("-1");
		return 0;
	}
	int ret=n*2;
	rep(i,0,n) {
		if (row[i]==n) {
			int cnt=0;
			rep(j,0,n) if (col[j]!=n) cnt++;
			ret=min(ret,cnt);
		} else {
			int cnt=0;
			if (col[i]==0) cnt++;
			rep(j,0,n) if (s[i][j]=='.') cnt++;
			rep(j,0,n) if (col[j]!=n) cnt++;
			ret=min(ret,cnt);
		}
	}
	printf("%d\n",ret);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:30:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:32:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",s[i]);
                   ^

Judge Result