Submission #38586

#	Time	Username	Problem	Language	Result	Execution time	Memory
38586		MrPlany	Money (IZhO17_money)	C++14	100 / 100	613 ms	9828 KiB

money

#include <iostream>
using namespace std;
const int N = 1e6+5;
int n,a[N],t[N];
int sum(int k){
	int s=0;
	while(k>0){
		s+=t[k];
		k-=k&-k;
	}
	return s;
}
int add(int k, int val){
	while(k<N){
		t[k]+=val;
		k+=k&-k;
	}
}
int main(){
	cin>>n;
	for(int i=1;i<=n;i++) cin>>a[i];
	int ans = 0;
	for(int i=1;i<=n;i++){
		int l,r;l = r = i;
		while( a[r+1]>=a[r] && sum(a[r+1]-1) - sum(a[l])<=0) r++;
		ans++;
		while(l<=r) add(a[l++],1);
		i=r;
	}
	cout << ans;
}

Compilation message (stderr)

money.cpp: In function 'int add(int, int)':
money.cpp:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^

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