Submission #319917

#	Time	Username	Problem	Language	Result	Execution time	Memory
319917		gustason	San (COCI17_san)	C++14	48 / 120	909 ms	65540 KiB

san

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int n;
ll need;
int h[41], c[41];
set<vector<int>> s;
void go(ll earned, int curr, vector<int> steps) {
    //cout << earned << " " << curr << "\n";
    if (s.count(steps)) {
        return;
    }
    if (earned >= need) {
        s.insert(steps);
    }
    for(int i = curr+1; i < n; i++) {
        if (h[curr] > h[i]) continue;
        steps.push_back(i);
        go(earned + c[i], i, steps);
        steps.pop_back();
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> n >> need;
    for(int i = 0; i < n; i++) {
        cin >> h[i] >> c[i];
    }

    vector<int> start;
    for(int i = 0; i < n; i++) {
        start.push_back(i);
        go(c[i], i, start);
        start.pop_back();
    }
    cout << s.size() << "\n";
    return 0;
}
//~ check for overflows

• Subtask 1: 24 / 24
• Subtask 2: 24 / 24
• Subtask 3: 0 / 24
• Subtask 4: 0 / 24
• Subtask 5: 0 / 24