Submission #1131513

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Source Code Expand

#include <algorithm>
#include <cassert>
#include <cstring>
#include <iostream>

using namespace std;

#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define REP(i, n) FOR(i, 0, n)
#define TRACE(x) cout << #x << " = " << x << endl
#define _ << " _ " <<

typedef long long llint;

const int MAXN = 505;

char a[MAXN][MAXN];

int main(void) {
  int n;
  scanf("%d", &n);
  REP(i, n) scanf("%s", a[i]);

  bool bad = true;
  int c = 0;
  REP(j, n) {
    int cb = 0;
    REP(i, n)
      if (a[i][j] == '#') cb++;
    
    if (cb > 0) bad = false;
    if (cb < n) c++;
  }

  if (bad) {
    puts("-1");
    return 0;
  }
  
  int ans = 1e9;
  REP(i, n) {
    int cw = 0;
    REP(j, n)
      if (a[i][j] == '.') cw++;
    int cb = 0;
    REP(j, n)
      if (a[j][i] == '#') cb++;

    ans = min(ans, cw + (cb == 0) + c);
  }

  printf("%d\n", ans);
  
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:22:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   REP(i, n) scanf("%s", a[i]);
                              ^

Judge Result