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Submission #424536

# Submission time Handle Problem Language Result Execution time Memory
424536 2021-06-12T04:52:25 Z Monchito Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 769180 KB 
#include "walk.h"
#include <queue>
#include <algorithm>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vll = vector<ll>;
using ii = pair<ll, int>;

#define sz(x) (int)x.size()
#define fi first
#define se second

const int MAXN = 3e6;
const ll INF = 1e18;

int n;
vi G[MAXN]; vll W[MAXN];

void create_link(int u, int v, ll w) {
    G[u].push_back(v);
    G[v].push_back(u);
    W[u].push_back(w);
    W[v].push_back(w);
}

ll dijkstra(int s, int g) { 
    vll dist(n, INF);
    priority_queue<ii> q;
    dist[s] = 0;
    q.push( {-0, s} );

    while(!q.empty()) {
        ii p = q.top(); q.pop();
        int u = p.se;

        if(dist[u] != -p.fi) continue;

        for(int i=0; i<sz(G[p.se]); i++) {
            int v = G[p.se][i];
            ll w = W[p.se][i];

            if(-p.fi + w < dist[v]) {
                dist[v] = -p.fi + w;
                q.push( { -dist[v], v } );
            }
        }
    }

    if(dist[g] == INF) return -1;
    return dist[g];
}

ll min_distance(vi x, vi h, vi l, vi r, vi y, int s, int g) {
    n = sz(x);  
    vector<pair<int, int>> bridge, re;

    for(int i=0; i<sz(l); i++) bridge.push_back( { y[i], i } );
    sort(bridge.begin(), bridge.end());

    for(int i=0; i<n; i++) re.push_back( { 0, i } );

    for(pair<int,int> p : bridge) {
        int index = p.se;

        create_link(re[l[index]].se, n, p.fi - re[l[index]].fi);
        re[l[index]] = { p.fi, n };

        pair<int,int> current_node = { x[l[index]], n };
        n++;

        for(int i = l[index]+1; i <= r[index]; i++) {
            if(p.fi <= h[i]) {
                create_link(current_node.se, n, x[i] - current_node.fi);
                current_node = { x[i], n };
                n++;

                create_link(current_node.se, re[i].se, p.fi - re[i].fi);
                re[i] = { p.fi, current_node.se };
            }
        }
    }

    return dijkstra(s, g);
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 141056 KB Output is correct
2 Correct 75 ms 141144 KB Output is correct
3 Correct 81 ms 141088 KB Output is correct
4 Correct 77 ms 141084 KB Output is correct
5 Correct 76 ms 141124 KB Output is correct
6 Correct 75 ms 141140 KB Output is correct
7 Correct 81 ms 141124 KB Output is correct
8 Correct 88 ms 141124 KB Output is correct
9 Correct 74 ms 141088 KB Output is correct
10 Correct 77 ms 141220 KB Output is correct
11 Correct 74 ms 141124 KB Output is correct
12 Correct 75 ms 141124 KB Output is correct
13 Correct 75 ms 141132 KB Output is correct
14 Correct 75 ms 141112 KB Output is correct
15 Correct 76 ms 141056 KB Output is correct
16 Correct 75 ms 141120 KB Output is correct
17 Correct 76 ms 141200 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 141124 KB Output is correct
2 Correct 85 ms 141100 KB Output is correct
3 Correct 639 ms 207728 KB Output is correct
4 Correct 746 ms 217364 KB Output is correct
5 Correct 493 ms 207388 KB Output is correct
6 Correct 872 ms 200688 KB Output is correct
7 Correct 492 ms 207540 KB Output is correct
8 Correct 796 ms 224912 KB Output is correct
9 Correct 586 ms 206548 KB Output is correct
10 Correct 995 ms 243508 KB Output is correct
11 Correct 470 ms 180648 KB Output is correct
12 Correct 347 ms 173372 KB Output is correct
13 Correct 834 ms 231740 KB Output is correct
14 Correct 2298 ms 171832 KB Output is correct
15 Correct 1422 ms 172568 KB Output is correct
16 Correct 361 ms 172644 KB Output is correct
17 Correct 353 ms 171484 KB Output is correct
18 Execution timed out 4080 ms 156560 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 153548 KB Output is correct
2 Runtime error 1495 ms 769180 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 153548 KB Output is correct
2 Runtime error 1495 ms 769180 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 141056 KB Output is correct
2 Correct 75 ms 141144 KB Output is correct
3 Correct 81 ms 141088 KB Output is correct
4 Correct 77 ms 141084 KB Output is correct
5 Correct 76 ms 141124 KB Output is correct
6 Correct 75 ms 141140 KB Output is correct
7 Correct 81 ms 141124 KB Output is correct
8 Correct 88 ms 141124 KB Output is correct
9 Correct 74 ms 141088 KB Output is correct
10 Correct 77 ms 141220 KB Output is correct
11 Correct 74 ms 141124 KB Output is correct
12 Correct 75 ms 141124 KB Output is correct
13 Correct 75 ms 141132 KB Output is correct
14 Correct 75 ms 141112 KB Output is correct
15 Correct 76 ms 141056 KB Output is correct
16 Correct 75 ms 141120 KB Output is correct
17 Correct 76 ms 141200 KB Output is correct
18 Correct 78 ms 141124 KB Output is correct
19 Correct 85 ms 141100 KB Output is correct
20 Correct 639 ms 207728 KB Output is correct
21 Correct 746 ms 217364 KB Output is correct
22 Correct 493 ms 207388 KB Output is correct
23 Correct 872 ms 200688 KB Output is correct
24 Correct 492 ms 207540 KB Output is correct
25 Correct 796 ms 224912 KB Output is correct
26 Correct 586 ms 206548 KB Output is correct
27 Correct 995 ms 243508 KB Output is correct
28 Correct 470 ms 180648 KB Output is correct
29 Correct 347 ms 173372 KB Output is correct
30 Correct 834 ms 231740 KB Output is correct
31 Correct 2298 ms 171832 KB Output is correct
32 Correct 1422 ms 172568 KB Output is correct
33 Correct 361 ms 172644 KB Output is correct
34 Correct 353 ms 171484 KB Output is correct
35 Execution timed out 4080 ms 156560 KB Time limit exceeded
36 Halted 0 ms 0 KB -