Submission #845471

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;


#define MAX 100002

int n;


vector<int> v;
vector<int> vv;
map<int, int> mp;
int main(){
	scanf("%d", &n);
	for (int i = 0; i < n; i++){
		int a;
		scanf("%d", &a);
		v.push_back(a);
		vv.push_back(a);
		mp[a] = i % 2;
	}
	sort(vv.begin(), vv.end());
	int ar[] = { 0, 0 };
	for (int i = 0; i < vv.size(); i++){
		if (mp[vv[i]] != i % 2){
			ar[i % 2]++;
		}
	}
	int k = max(ar[0], ar[1]);
	cout << k << endl;
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:15:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:18:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a);
                  ^

Judge Result