Submission #1708168

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Source Code Expand

#include<bits/stdc++.h>

using namespace std;

int N, needRepair, atLeast[509];
char a[509][509];

int main ()
{
//freopen ("input", "r", stdin);
//freopen ("output", "w", stdout);

scanf ("%d\n", &N);
for (int i=1; i<=N; i++)
    scanf ("%s", a[i] + 1);
bool allWhite = 1;
for (int i=1; i<=N; i++)
    for (int j=1; j<=N; j++)
        a[i][j] = (a[i][j] == '#'), allWhite &= (a[i][j] == 0);
if (allWhite)
{
    printf ("-1\n");
    return 0;
}
for (int j=1; j<=N; j++)
    for (int i=1; i<=N; i++)
        atLeast[j] |= a[i][j];
for (int j=1; j<=N; j++)
{
    bool allBlack = 1;
    for (int i=1; i<=N; i++)
        allBlack &= a[i][j];
    if (!allBlack) needRepair ++;
}
int ans = 2 * N;
for (int k=1; k<=N; k++)
{
    int curr = 0;
    for (int i=1; i<=N; i++)
        curr += (a[k][i] == 0);
    curr += needRepair;
    if (!atLeast[k]) curr ++;
    if (curr < ans)
        ans = curr;
}
printf ("%d\n", ans);
return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 scanf ("%d\n", &N);
                   ^
./Main.cpp:15:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%s", a[i] + 1);
                           ^

Judge Result