Submission #976960

#	Time	Username	Problem	Language	Result	Execution time	Memory
976960		SeenSiravit	Vudu (COCI15_vudu)	C++14	28 / 140	1071 ms	16284 KiB

vudu

#include<bits/stdc++.h>
#define ll long long

using namespace std;

const int mxN = 1e6 + 5;

int n;
ll a[mxN] , b[mxN];
ll p;

int main(){
    ios::sync_with_stdio(0),cin.tie(0);
    
    cin>> n;

    for(int i=1;i<=n;i++) cin>> a[i] , a[i] += a[i-1];

    // for(int i=1;i<=n;i++) cout<< a[i] << " ";
    // cout<< "\n";

    cin>> p;

    for(int i=1;i<=n;i++) b[i] = a[i] - p*i;
    // for(int i=1;i<=n;i++) cout<< b[i] << " ";
    // cout<< "\n\n";

    vector<ll> v;

    ll ans = 0;

    for(int i=1;i<=n;i++){
        // cout<< i << " : ";
        // for(auto val : v) cout<< val << " " ;

        int cnt = upper_bound(v.begin() , v.end() , b[i]) - v.begin();

        // cout<< "\ncnt = " << cnt << " ";

        if(a[i]-a[i-1] >= p) cnt++;

        // cout<< cnt << "\n\n";

        ans += cnt;

        v.push_back(b[i-1]);
        sort(v.begin() , v.end());
    }

    cout<< ans;

    return 0;
}

• Subtask 1: 28 / 140