Submission #2520439

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Source Code Expand

#include <cstdio>
#include <cstdlib>
#include <algorithm>
#define repi(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,a) repi(i,0,a)

int N, D[50];
bool used[25];

int main()
{
  scanf( "%d", &N );
  rep( i, N )
    scanf( "%d", D+i );

  std::sort( D, D+N );

  bool tug = false;
  rep( i, N )
  {
    int nxt = (tug?D[i]:24-D[i]);

    if( used[nxt] )
    {
      puts("0");

      return 0;
    }

    used[nxt] = true;
    tug ^= true;
  }

  int ans = 24;
  rep( i, 24 ) rep( j, i ) if( used[i] && used[j] )
    ans = std::min( ans, i-j );

  printf( "%d\n", ans );

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf( "%d", &N );
                    ^
./Main.cpp:14:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf( "%d", D+i );
                       ^

Judge Result