Submission #37561

#	Time	Username	Problem	Language	Result	Execution time	Memory
37561		Abelyan	Money (IZhO17_money)	C++14	0 / 100	0 ms	10964 KiB

money

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;

const int N=1000006;
pair <int,int> a[N];
bool r[N];

int main(){
	ios_base::sync_with_stdio(false);
	freopen("money.in","r",stdin);
	freopen("money.out","w",stdout);
	int n;
	cin>>n;
	for (int i = 0; i < n; i++){
		int k;
		cin>>k;
		a[i].first=k;
		a[i].second=-i;
	}
	sort(a,a+n);
	int ans=1;
	r[-a[0].second+1]=true;
	for (int i = 1; i < n; i++){
		if (r[-a[i].second]){
			r[-a[i-1].second+1]=false;
			r[-a[i].second+1]=true;
		}
		else{
			if (-a[i].second < -a[i - 1].second){
				r[-a[i - 1].second + 1] = false;
				r[-a[i].second + 1] = true;
			}
			else{
				r[-a[i].second + 1] = true;
			}
			ans++;
		}
	}
	cout<<ans<<endl;
	return 0;
}

Compilation message (stderr)

money.cpp: In function 'int main()':
money.cpp:13:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("money.in","r",stdin);
                               ^
money.cpp:14:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("money.out","w",stdout);
                                 ^

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55