Submission #72513310

Source Code Expand

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() 
{
    ll n, k, x;
    cin >> n >> k >> x;
    
    vector<ll> a(n);
    for(int i = 0; i < n; i++) cin >> a[i];
    sort(a.begin(), a.end());
    
    vector<ll> pre(n+1, 0);
    for(int i = 0; i < n; i++) pre[i+1] = pre[i] + a[i];
    if(pre[k] < x)
    {
        cout << -1 << endl;
        return 0;
    }
    ll need = pre[k] - x;
    auto it = upper_bound(pre.begin(), pre.begin() + k, need);
    int index = distance(pre.begin(), it) - 1;
    
    cout << n - index << endl;
    
    return 0;
}

Submission Info

Submission Time
Task C - Sake or Water
User captainprice27
Language C++23 (GCC 15.2.0)
Score 300
Code Size 609 Byte
Status AC
Exec Time 101 ms
Memory 8080 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 300 / 300
Status
AC × 3
AC × 33
Set Name Test Cases
Sample example_00.txt, example_01.txt, example_02.txt
All example_00.txt, example_01.txt, example_02.txt, hand_00.txt, hand_01.txt, hand_02.txt, hand_03.txt, hand_04.txt, hand_05.txt, hand_06.txt, hand_07.txt, hand_08.txt, hand_09.txt, hand_10.txt, hand_11.txt, random_00.txt, random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, random_11.txt, random_12.txt, random_13.txt, random_14.txt, random_15.txt, random_16.txt, random_17.txt
Case Name Status Exec Time Memory
example_00.txt AC 1 ms 3604 KiB
example_01.txt AC 1 ms 3484 KiB
example_02.txt AC 1 ms 3580 KiB
hand_00.txt AC 90 ms 8040 KiB
hand_01.txt AC 90 ms 8044 KiB
hand_02.txt AC 77 ms 8052 KiB
hand_03.txt AC 78 ms 8080 KiB
hand_04.txt AC 79 ms 8080 KiB
hand_05.txt AC 79 ms 7968 KiB
hand_06.txt AC 77 ms 8080 KiB
hand_07.txt AC 1 ms 3648 KiB
hand_08.txt AC 1 ms 3620 KiB
hand_09.txt AC 1 ms 3512 KiB
hand_10.txt AC 1 ms 3472 KiB
hand_11.txt AC 89 ms 8040 KiB
random_00.txt AC 99 ms 8080 KiB
random_01.txt AC 100 ms 8052 KiB
random_02.txt AC 98 ms 7956 KiB
random_03.txt AC 99 ms 8052 KiB
random_04.txt AC 99 ms 8012 KiB
random_05.txt AC 98 ms 7920 KiB
random_06.txt AC 98 ms 7956 KiB
random_07.txt AC 99 ms 8012 KiB
random_08.txt AC 100 ms 7956 KiB
random_09.txt AC 99 ms 7976 KiB
random_10.txt AC 99 ms 7912 KiB
random_11.txt AC 97 ms 8068 KiB
random_12.txt AC 99 ms 8012 KiB
random_13.txt AC 100 ms 8080 KiB
random_14.txt AC 101 ms 8052 KiB
random_15.txt AC 96 ms 7976 KiB
random_16.txt AC 100 ms 8040 KiB
random_17.txt AC 98 ms 8032 KiB