Submission #21326

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
21326	2017-04-13 08:29:12	Ushio	Railway Trip (JOI17_railway_trip)	C++14	20 / 100	2000 ms	9140 KiB

railway_trip

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#include <bits/stdc++.h>
#define SZ(x) ((int) (x).size())
using namespace std;
typedef long long i64;
int main() {
    #ifdef LOCAL_RUN
    freopen("task.in", "r", stdin);
    freopen("task.out", "w", stdout);
    //freopen("task.err", "w", stderr);
    #endif // ONLINE_JUDGE
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, k, q;
    cin >> n >> k >> q;
    vector<int> A(n);
    vector<int> stk;
    vector<vector<int>> graph(n);
    for (int i = 0; i < n; ++i) {
        cin >> A[i];
        int prev = -1;
        while (!stk.empty() && A[i] > A[stk.back()]) {
            if (A[stk.back()] > prev) {
                graph[i].push_back(stk.back());
                graph[stk.back()].push_back(i);
            }
            prev = A[stk.back()];
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 0 / 25
• Subtask 4: 0 / 55