Submission #620067

#	Time	Username	Problem	Language	Result	Execution time	Memory
620067		sword060	Vudu (COCI15_vudu)	C++17	42 / 140	1064 ms	55560 KiB

vudu

#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update>
ordered_set s;
int main(){
	ios::sync_with_stdio(0);cin.tie(0);
	long long x,k;cin>>x;
	long long a[x+3],ans=0;
	for(int i=0;i<x;i++)cin>>a[i];
	cin>>k;
	for(int i=0;i<x;i++)a[i]-=k;
	s.insert(0);
	long long xd=0;
	for(int i=0;i<x;i++){
	  xd+=a[i];
	  ans+=s.order_of_key(xd+1);
	  s.insert(xd);
	}
	cout<<ans;
	return 0;
}

• Subtask 1: 42 / 140