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Submission #975802

# Submission time Handle Problem Language Result Execution time Memory
975802 2024-05-05T22:51:39 Z andro Jakarta Skyscrapers (APIO15_skyscraper) C++14
10 / 100
 1 ms 1880 KB 
#include <bits/stdc++.h>

#define int long long

#define ll long long

using namespace std;

const int N = 30005;

vector<pair<ll,ll>>G[N];
vector<ll>dist(N,1e18),par(N,-1);

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, m;
    cin >> n >> m;
    vector<pair<int,int>> a(m);
    for(int i = 0; i < m; i++) {
        cin >> a[i].first >> a[i].second;
    }
    for(int i = 0; i < m; i++) {
        for(int j = 1; j < 1000; j++) {
            if(a[i].first - j * a[i].second >= 0) {
                G[a[i].first].push_back({a[i].first - j * a[i].second, j});
            }
            if(a[i].first + j * a[i].second <= n) {
                G[a[i].first].push_back({a[i].first + j * a[i].second, j});
            }
        }
    }
    priority_queue<pair<ll,ll>,vector<pair<ll,ll>>,greater<pair<ll,ll>>>pq;
    pq.push({0,a[0].first});
    dist[0] = 0;
    vector<bool>vis(n+1,false);
    while(pq.size()) {
        ll d,u;
        tie(d,u) = pq.top();
        pq.pop();
        if(vis[u]) continue;
        vis[u] = true;
        for(auto X:G[u]) {
            if(dist[X.first] > dist[u] + X.second) {
                dist[X.first] = dist[u] + X.second;
                pq.push({dist[X.first],X.first});
                par[X.first] = u;
            }
        }
    }
    if(dist[a[1].first] == 1e18) {
        cout << - 1;
    }
    else {
        cout << dist[a[1].first];
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1624 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 1 ms 1628 KB Output is correct
7 Correct 1 ms 1628 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1624 KB Output is correct
6 Correct 1 ms 1624 KB Output is correct
7 Correct 1 ms 1628 KB Output is correct
8 Incorrect 1 ms 1880 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 1 ms 1628 KB Output is correct
7 Correct 1 ms 1628 KB Output is correct
8 Incorrect 1 ms 1628 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1624 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 1 ms 1628 KB Output is correct
7 Correct 1 ms 1628 KB Output is correct
8 Incorrect 1 ms 1628 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1624 KB Output is correct
2 Correct 1 ms 1624 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 1 ms 1628 KB Output is correct
7 Correct 1 ms 1624 KB Output is correct
8 Incorrect 1 ms 1628 KB Output isn't correct
9 Halted 0 ms 0 KB -