Submission #3003221

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Source Code Expand

#include <cstdio>
#include <cmath>
#include <algorithm>
#define repi(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,a) repi(i,0,a)
#define all(a) (a).begin(), (a).end()

constexpr int MAX_N = 100;

int N;
int x[MAX_N], y[MAX_N];
double ans;

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

  rep( i, N ) rep( j, i )
    ans = std::max( ans, sqrt( (x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]) ) );

  printf( "%.6f\n", ans );
  
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:16:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf( "%d", &N );
                    ^
./Main.cpp:18:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf( "%d%d", x+i, y+i );
                              ^

Judge Result