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Submission #236678

# Submission time Handle Problem Language Result Execution time Memory
236678 2020-06-02T19:39:03 Z DS007 Jakarta Skyscrapers (APIO15_skyscraper) C++14
22 / 100
 11 ms 6776 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

const int N = 30000;
vector<pair<int, int>> adj[N];
int b[N], p[N];
set<int> inv[N];
int n, m;

void solveTestCase() {
    cin >> n >> m;
    for (int i = 0; i < m; i++) {
        cin >> b[i] >> p[i];
        inv[b[i]].insert(p[i]);
    }

    for (int i = 0; i < m; i++) {
        for (int j = b[i] - p[i], k = 1; j >= 0; j -= p[i], k++) {
            adj[b[i]].emplace_back(j, k);
            if (inv[j].count(p[i]))
                break;
        }
        for (int j = b[i] + p[i], k = 1; j < n; j += p[i], k++) {
            adj[b[i]].emplace_back(j, k);
            if (inv[j].count(p[i]))
                break;
        }
    }

    int dist[n];
    fill(dist, dist + n, 1e18);
    dist[b[0]] = 0;
    priority_queue<pair<int, int>, vector<pair<int, int>>, decltype(greater<>())> pq;
    pq.push({0, b[0]});
    set<int> done;

    while (!pq.empty()) {
        auto temp = pq.top();
        pq.pop();

        if (done.count(temp.second))
            break;
        done.insert(temp.second);
        assert(temp.first == dist[temp.second] && temp.first != 1e18);

        for (auto i : adj[temp.second]) {
            if (dist[i.first] > temp.first + i.second) {
                dist[i.first] = temp.first + i.second;
                pq.push({dist[i.first], i.first});
            }
        }
    }

    cout << (dist[b[1]] == 1e18 ? -1 : dist[b[1]]);
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int test = 1;
    // cin >> test;
    while (test--)
        solveTestCase();
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2432 KB Output is correct
2 Correct 6 ms 2432 KB Output is correct
3 Correct 6 ms 2432 KB Output is correct
4 Correct 6 ms 2432 KB Output is correct
5 Correct 6 ms 2432 KB Output is correct
6 Correct 6 ms 2432 KB Output is correct
7 Correct 6 ms 2432 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2432 KB Output is correct
2 Correct 6 ms 2432 KB Output is correct
3 Correct 6 ms 2432 KB Output is correct
4 Correct 6 ms 2432 KB Output is correct
5 Correct 6 ms 2432 KB Output is correct
6 Correct 6 ms 2432 KB Output is correct
7 Correct 6 ms 2560 KB Output is correct
8 Correct 6 ms 2432 KB Output is correct
9 Correct 6 ms 2432 KB Output is correct
10 Correct 6 ms 2560 KB Output is correct
11 Correct 7 ms 2688 KB Output is correct
12 Correct 11 ms 6776 KB Output is correct
13 Correct 6 ms 2688 KB Output is correct
14 Correct 7 ms 2688 KB Output is correct
15 Correct 6 ms 2688 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2432 KB Output is correct
2 Correct 6 ms 2548 KB Output is correct
3 Correct 7 ms 2432 KB Output is correct
4 Correct 6 ms 2432 KB Output is correct
5 Correct 6 ms 2432 KB Output is correct
6 Correct 6 ms 2432 KB Output is correct
7 Correct 6 ms 2432 KB Output is correct
8 Correct 6 ms 2432 KB Output is correct
9 Correct 6 ms 2432 KB Output is correct
10 Correct 6 ms 2560 KB Output is correct
11 Correct 7 ms 2688 KB Output is correct
12 Correct 11 ms 6776 KB Output is correct
13 Correct 6 ms 2688 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 7 ms 2736 KB Output is correct
16 Correct 6 ms 2560 KB Output is correct
17 Correct 7 ms 2944 KB Output is correct
18 Correct 6 ms 2688 KB Output is correct
19 Correct 6 ms 2560 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 6 ms 2560 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Incorrect 6 ms 2688 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2432 KB Output is correct
2 Correct 6 ms 2432 KB Output is correct
3 Correct 6 ms 2432 KB Output is correct
4 Correct 6 ms 2432 KB Output is correct
5 Correct 6 ms 2432 KB Output is correct
6 Correct 6 ms 2432 KB Output is correct
7 Correct 6 ms 2432 KB Output is correct
8 Correct 6 ms 2432 KB Output is correct
9 Correct 6 ms 2432 KB Output is correct
10 Correct 6 ms 2560 KB Output is correct
11 Correct 6 ms 2688 KB Output is correct
12 Correct 11 ms 6776 KB Output is correct
13 Correct 6 ms 2688 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 6 ms 2688 KB Output is correct
16 Correct 6 ms 2560 KB Output is correct
17 Correct 7 ms 2944 KB Output is correct
18 Correct 6 ms 2688 KB Output is correct
19 Correct 6 ms 2560 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 6 ms 2560 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Incorrect 6 ms 2688 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2432 KB Output is correct
2 Correct 6 ms 2432 KB Output is correct
3 Correct 6 ms 2432 KB Output is correct
4 Correct 6 ms 2432 KB Output is correct
5 Correct 6 ms 2432 KB Output is correct
6 Correct 6 ms 2432 KB Output is correct
7 Correct 6 ms 2432 KB Output is correct
8 Correct 6 ms 2432 KB Output is correct
9 Correct 6 ms 2432 KB Output is correct
10 Correct 6 ms 2560 KB Output is correct
11 Correct 7 ms 2688 KB Output is correct
12 Correct 10 ms 6776 KB Output is correct
13 Correct 6 ms 2688 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 6 ms 2688 KB Output is correct
16 Correct 7 ms 2688 KB Output is correct
17 Correct 7 ms 2944 KB Output is correct
18 Correct 6 ms 2688 KB Output is correct
19 Correct 6 ms 2688 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 6 ms 2560 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Incorrect 6 ms 2688 KB Output isn't correct
24 Halted 0 ms 0 KB -