Submission #249012

#	Time	Username	Problem	Language	Result	Execution time	Memory
249012		kshitij_sodani	Vudu (COCI15_vudu)	C++14	126 / 140	743 ms	65540 KiB

vudu

/*
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second

#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace __gnu_pbds;
#define ord tree<llo,null_type,less_equal<llo>,rb_tree_tag,tree_order_statistics_node_update>



int n;
int it[1000001];
int p;

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n;
	for(llo i=0;i<n;i++){
		cin>>it[i];
	}
	cin>>p;
	for(llo i=0;i<n;i++){
		it[i]-=p;
	}
	ord ss;
	llo ans=0;
	llo su=0;
	ss.insert(0);
	for(llo i=0;i<n;i++){
		su+=it[i];
		ans+=ss.order_of_key(su+1);
		ss.insert(su);
		//cout<<ans<<endl;
	}
	cout<<ans<<endl;







	return 0;
}

/*
g++  -o aa -O2 box.cpp grader.cpp -std=c++14
*/

• Subtask 1: 126 / 140