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Submission #968076

# Submission time Handle Problem Language Result Execution time Memory
968076 2024-04-23T07:33:24 Z vjudge1 Vudu (COCI15_vudu) C++17
126 / 140
 251 ms 34492 KB 
#include<bits/stdc++.h>
 
using namespace std;
 
int n, fw[1000002];
    long long qs[1000002], k;
long long ans;
 
void update(int idx, int val){
    for(; idx <= n+1; idx+=(idx&-idx)) fw[idx]+=val;
}
 
long long query(int idx){
    long long sum = 0;
    for(; idx; idx-=(idx&-idx)) sum+=fw[idx];
    return sum;
}
 
signed main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n;
    vector<long long> v;
    memset(qs, 0, sizeof(qs));
    for(int i = 1; i<=n; ++i) cin >> qs[i];
    cin >> k;
    for(int i = 1; i<=n; ++i) qs[i]+=qs[i - 1];
    for(int i = 0; i<=n; ++i) v.push_back(qs[i] - i*k);
    sort(v.begin(), v.end());
    v.erase(unique(v.begin(), v.end()));
    for(int i = 0; i<=n; ++i){
        int id = lower_bound(v.begin(), v.end(), qs[i] - i*k) - v.begin();
        ans+=query(id+1);
        update(id+1, 1);
    }
    cout << ans;
}

Subtask #1
126.0 / 140.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8792 KB Output is correct
2 Correct 3 ms 8796 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 251 ms 19640 KB Output is correct
5 Correct 133 ms 18884 KB Output is correct
6 Runtime error 128 ms 34492 KB Execution killed with signal 11
7 Correct 228 ms 18752 KB Output is correct
8 Correct 196 ms 18916 KB Output is correct
9 Correct 247 ms 20444 KB Output is correct
10 Correct 212 ms 18408 KB Output is correct