Submission #845427

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Source Code Expand

#include <cstdio>
#include <algorithm>
using namespace std;

int main()
{
  int n;
  scanf("%d",&n);
  static int a[100000],A[100000];
  for(int i=0;i<n;i++){
    scanf("%d",a+i);
    A[i]=a[i];
  }
  sort(A,A+n);
  int b=0,c=0;
  for(int i=0;i<n;i++){
    int k=lower_bound(A,A+n,a[i])-A;
    if(i%2==0&&k%2==1){
      b++;
    }
    if(i%2==1&&k%2==0){
      c++;
    }
  }
  printf("%d\n",min(b,c));
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
                 ^
./Main.cpp:11:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",a+i);
                    ^

Judge Result