Submission #1129940

#	Time	Username	Problem	Language	Result	Execution time	Memory
1129940		vladilius	Toll (BOI17_toll)	C++20	100 / 100	2740 ms	8444 KiB

toll

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
const int inf = 1e9;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int k, n, m, q; cin>>k>>n>>m>>q;
    vector<pii> g1[n + 1], g2[n + 1];
    while (m--){
        int x, y, t; cin>>x>>y>>t;
        x++; y++;
        g1[x].pb({y, t});
        g2[y].pb({x, t});
    }
    
    while (q--){
        int x, y; cin>>x>>y;
        x++; y++;
        vector<int> dist(n + 1, inf);
        dist[x] = 0;
        for (int i = x; i <= y; i++){
            for (auto [j, t]: g1[i]){
                dist[j] = min(dist[j], dist[i] + t);
            }
        }
        
        cout<<((dist[y] == inf) ? -1 : dist[y])<<"\n";
    }
}

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 8 / 8
• Subtask 4: 31 / 31
• Subtask 5: 44 / 44