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Submission #1097443

# Submission time Handle Problem Language Result Execution time Memory
1097443 2024-10-07T11:53:22 Z Kerim Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 13 ms 2780 KB 
#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define right sag
#define left cep
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N = 2e3+5;
const ll INF = 1e18;
set<int> adj[N];
ll dis[N];
 
int main(){
    int n, m;
    scanf("%d%d", &n, &m);
    int s, t;
    for(int i = 1; i <= m; ++i){
        int x, p;
        scanf("%d%d", &x, &p), x++;
        if (i == 1)
            s = x;
        if (i == 2)
            t = x;
        adj[x].insert(p);
    }
    for(int i = 1; i <= n; ++i)
        dis[i] = INF;
    priority_queue<pli, vector<pli>, greater<pli>> pq;
    pq.push({0, s});
    dis[s] = 0;
    while(!pq.empty()){
        pli P = pq.top();
        pq.pop();
        ll val = P.ff;
        int x = P.ss;
        if(dis[x] != val)
            continue;
        for (auto p: adj[x]){
            for (int i = 1; x - i * p >= 1; i++){
                int to = x - i * p;
                if (umin(dis[to], val + i))
                    pq.push({dis[to], to});
            }
            for (int i = 1; x + i * p <= n; i++){
                int to = x + i * p;
                if (umin(dis[to], val + i))
                    pq.push({dis[to], to});
            }
        }
    }
    if(dis[t] == INF)
        puts("-1");
    else
        printf("%lld\n", dis[t]);
    return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |     scanf("%d%d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:28:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |         scanf("%d%d", &x, &p), x++;
      |         ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:39:12: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   39 |     dis[s] = 0;
      |     ~~~~~~~^~~
skyscraper.cpp:60:13: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
   60 |     if(dis[t] == INF)
      |        ~~~~~^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 532 KB Output is correct
3 Correct 0 ms 536 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 540 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 3 ms 604 KB Output is correct
21 Correct 1 ms 536 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 3 ms 856 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 2 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 3 ms 1248 KB Output is correct
34 Correct 3 ms 1248 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 3 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 600 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 2 ms 860 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 1 ms 792 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 4 ms 1180 KB Output is correct
34 Correct 4 ms 1248 KB Output is correct
35 Correct 9 ms 1880 KB Output is correct
36 Correct 2 ms 864 KB Output is correct
37 Correct 7 ms 1760 KB Output is correct
38 Correct 10 ms 2608 KB Output is correct
39 Correct 10 ms 2396 KB Output is correct
40 Correct 9 ms 2396 KB Output is correct
41 Correct 10 ms 2400 KB Output is correct
42 Correct 4 ms 604 KB Output is correct
43 Correct 4 ms 604 KB Output is correct
44 Correct 6 ms 788 KB Output is correct
45 Correct 12 ms 2780 KB Output is correct
46 Correct 13 ms 2740 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 608 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 0 ms 540 KB Output is correct
17 Correct 1 ms 620 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 3 ms 604 KB Output is correct
21 Correct 0 ms 604 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 2 ms 856 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 1 ms 720 KB Output is correct
32 Correct 1 ms 600 KB Output is correct
33 Correct 4 ms 1184 KB Output is correct
34 Correct 4 ms 1248 KB Output is correct
35 Correct 9 ms 1964 KB Output is correct
36 Correct 2 ms 856 KB Output is correct
37 Correct 6 ms 1824 KB Output is correct
38 Correct 9 ms 2396 KB Output is correct
39 Correct 10 ms 2396 KB Output is correct
40 Correct 10 ms 2396 KB Output is correct
41 Correct 10 ms 2284 KB Output is correct
42 Correct 4 ms 604 KB Output is correct
43 Correct 4 ms 660 KB Output is correct
44 Correct 6 ms 860 KB Output is correct
45 Correct 12 ms 2700 KB Output is correct
46 Correct 12 ms 2732 KB Output is correct
47 Runtime error 1 ms 604 KB Execution killed with signal 11
48 Halted 0 ms 0 KB -