oj.uz

Submission #696901

# Submission time Handle Problem Language Result Execution time Memory
696901 2023-02-07T14:59:09 Z Do_you_copy Autobus (COCI22_autobus) C++17
70 / 70
 437 ms 23116 KB 
//Then
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define faster ios_base::sync_with_stdio(0); cin.tie(0);
#define int long long
using namespace std;
using ll = long long;
using ld = long double;
using pii = pair <int, int>;
mt19937_64 Rand(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 80 + 1;
//const int Mod = 1e9 + 7;
const ll inf = 0x3f3f3f3f3f3f3f3f;
int n, k, q, m;
int c[maxN][maxN];

struct TEdge{
    int u, i, w;
};

struct TPQ{
    int lab, u, i;
    bool operator < (const TPQ &other) const{
        return lab > other.lab;
    }
};

vector <TEdge> adj[maxN][maxN];
ll d[maxN][maxN][maxN];

void Dijkstra(int s){
    memset(d[s], 0x3f, sizeof(d[s]));
    priority_queue <TPQ> PQ;
    d[s][s][0] = 0;
    PQ.push({0, s, 0});
    while (!PQ.empty()){
        auto r = PQ.top(); PQ.pop();
        if (d[s][r.u][r.i] != r.lab) continue;
        for (auto i: adj[r.u][r.i]){
            if (d[s][i.u][i.i] > d[s][r.u][r.i] + i.w){
                d[s][i.u][i.i] = d[s][r.u][r.i] + i.w;
                PQ.push({d[s][i.u][i.i], i.u, i.i});
            }
        }
    }
    for (int i = 1; i <= n; ++i){
        for (int j = 1; j <= n; ++j){
            d[s][i][j] = min(d[s][i][j], d[s][i][j - 1]);
        }
    }
}

void Init(){
    cin >> n >> m;
    memset(c, 0x3f, sizeof(c));
    for(int i = 1; i <= m; ++i){
        int u, v, w;
        cin >> u >> v >> w;
        c[u][v] = min(c[u][v], w);
    }
    cin >> k >> q;
    k = min(k, n);
    for (int i = 1; i <= n; ++i){
        for (int j = 1; j <= n; ++j){
            if (c[i][j] == inf) continue;
            for (int l = 0; l < n; ++l){
                adj[i][l].pb({j, l + 1, c[i][j]});
            }
        }
    }
    for (int i = 1; i <= n; ++i){
        Dijkstra(i);
    }
    while (q--){
        int u, v;
        cin >> u >> v;
        cout << (d[u][v][k] == inf ? -1 : d[u][v][k]) << "\n";
    }
}

#define debug
#define taskname "test"
signed main(){
    faster
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        freopen(taskname".out", "w", stdout);
    }
    int tt = 1;
    //cin >> tt;
    while (tt--){
        Init();
    }
    if (fopen("timeout.txt", "r")){
        ofstream timeout("timeout.txt");
        timeout << signed(double(clock()) / CLOCKS_PER_SEC * 1000);
        timeout.close();
        #ifndef debug
        cerr << "Time elapsed: " << signed(double(clock()) / CLOCKS_PER_SEC * 1000) << "ms\n";
        #endif // debug
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:88:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |         freopen(taskname".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:89:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |         freopen(taskname".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 852 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 872 KB Output is correct
4 Correct 1 ms 852 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 5256 KB Output is correct
2 Correct 85 ms 5232 KB Output is correct
3 Correct 80 ms 5260 KB Output is correct
4 Correct 103 ms 6828 KB Output is correct
5 Correct 106 ms 6732 KB Output is correct
6 Correct 215 ms 12304 KB Output is correct
7 Correct 210 ms 12244 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 852 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 872 KB Output is correct
4 Correct 1 ms 852 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 80 ms 5472 KB Output is correct
8 Correct 90 ms 5384 KB Output is correct
9 Correct 97 ms 6804 KB Output is correct
10 Correct 98 ms 6840 KB Output is correct
11 Correct 208 ms 12248 KB Output is correct
12 Correct 235 ms 12232 KB Output is correct
13 Correct 372 ms 22688 KB Output is correct
14 Correct 366 ms 22920 KB Output is correct
15 Correct 386 ms 22760 KB Output is correct
16 Correct 371 ms 22836 KB Output is correct
17 Correct 343 ms 22328 KB Output is correct
18 Correct 314 ms 22336 KB Output is correct
19 Correct 312 ms 22368 KB Output is correct
20 Correct 313 ms 22352 KB Output is correct
21 Correct 343 ms 22256 KB Output is correct
22 Correct 337 ms 22224 KB Output is correct
23 Correct 339 ms 22220 KB Output is correct
24 Correct 336 ms 22196 KB Output is correct
25 Correct 332 ms 22320 KB Output is correct
26 Correct 336 ms 22336 KB Output is correct
27 Correct 331 ms 22320 KB Output is correct
28 Correct 343 ms 22340 KB Output is correct
29 Correct 393 ms 22844 KB Output is correct
30 Correct 404 ms 22840 KB Output is correct
31 Correct 407 ms 23116 KB Output is correct
32 Correct 437 ms 22804 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 852 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 872 KB Output is correct
4 Correct 1 ms 852 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 89 ms 5256 KB Output is correct
8 Correct 85 ms 5232 KB Output is correct
9 Correct 80 ms 5260 KB Output is correct
10 Correct 103 ms 6828 KB Output is correct
11 Correct 106 ms 6732 KB Output is correct
12 Correct 215 ms 12304 KB Output is correct
13 Correct 210 ms 12244 KB Output is correct
14 Correct 80 ms 5472 KB Output is correct
15 Correct 90 ms 5384 KB Output is correct
16 Correct 97 ms 6804 KB Output is correct
17 Correct 98 ms 6840 KB Output is correct
18 Correct 208 ms 12248 KB Output is correct
19 Correct 235 ms 12232 KB Output is correct
20 Correct 372 ms 22688 KB Output is correct
21 Correct 366 ms 22920 KB Output is correct
22 Correct 386 ms 22760 KB Output is correct
23 Correct 371 ms 22836 KB Output is correct
24 Correct 343 ms 22328 KB Output is correct
25 Correct 314 ms 22336 KB Output is correct
26 Correct 312 ms 22368 KB Output is correct
27 Correct 313 ms 22352 KB Output is correct
28 Correct 343 ms 22256 KB Output is correct
29 Correct 337 ms 22224 KB Output is correct
30 Correct 339 ms 22220 KB Output is correct
31 Correct 336 ms 22196 KB Output is correct
32 Correct 332 ms 22320 KB Output is correct
33 Correct 336 ms 22336 KB Output is correct
34 Correct 331 ms 22320 KB Output is correct
35 Correct 343 ms 22340 KB Output is correct
36 Correct 393 ms 22844 KB Output is correct
37 Correct 404 ms 22840 KB Output is correct
38 Correct 407 ms 23116 KB Output is correct
39 Correct 437 ms 22804 KB Output is correct
40 Correct 74 ms 5348 KB Output is correct
41 Correct 77 ms 5320 KB Output is correct
42 Correct 100 ms 6896 KB Output is correct
43 Correct 107 ms 6792 KB Output is correct
44 Correct 219 ms 12376 KB Output is correct
45 Correct 218 ms 12288 KB Output is correct
46 Correct 368 ms 22836 KB Output is correct
47 Correct 382 ms 22748 KB Output is correct
48 Correct 374 ms 22956 KB Output is correct
49 Correct 371 ms 22616 KB Output is correct
50 Correct 296 ms 22264 KB Output is correct
51 Correct 321 ms 22164 KB Output is correct
52 Correct 308 ms 22188 KB Output is correct
53 Correct 317 ms 22148 KB Output is correct
54 Correct 329 ms 22156 KB Output is correct
55 Correct 341 ms 21568 KB Output is correct
56 Correct 329 ms 21096 KB Output is correct
57 Correct 328 ms 20936 KB Output is correct
58 Correct 330 ms 21024 KB Output is correct
59 Correct 350 ms 20900 KB Output is correct
60 Correct 310 ms 20920 KB Output is correct
61 Correct 315 ms 20852 KB Output is correct
62 Correct 416 ms 21220 KB Output is correct
63 Correct 401 ms 21168 KB Output is correct
64 Correct 398 ms 21264 KB Output is correct
65 Correct 393 ms 21232 KB Output is correct