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Submission #681918

# Submission time Handle Problem Language Result Execution time Memory
681918 2023-01-14T21:13:58 Z Ronin13 Toll (BOI17_toll) C++14
100 / 100
 491 ms 49176 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define f first
#define s second
#define pii pair<ll,ll>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
using namespace std;
const int nmax = 5e4 + 1;
int dist[nmax][41][5];
int k;
int get(int a, int b){
    int A = a / k;
    int B = b / k;
    if(A >= B){
        return -1;
    }
    vector <pii> vec;
    vec.pb({a, 0});
    while(B > A + 40){
        vector <pii> nw;
        int d[5];
        fill(d, d + 5, 1e9 + 1);
        for(auto x : vec){
            int v = x.f, D = x.s;
            for(int j = 0; j < k; j++){
                d[j] = min(d[j], dist[v][40][j] + D);
            }
        }
        A += 40;
        vec.clear();
        for(int j = 0; j < k; j++){
            if(d[j] != 1e9 + 1)
                vec.pb({A * k + j, d[j]});
        }
    }
    int ans = 1e9 + 1;
    for(auto x : vec){
        int v = x.f, D = x.s;
        ans = min(ans, dist[v][B - A][b % k] + D);
    }
    if(ans == 1e9 + 1) return -1;
    return ans;
}

int main(){
    int n, m,  o; cin >> k >> n >> m >> o;
    vector <vector <pii> > g(n + 1);
    for(int i = 1; i <= m; i++){
        int u, v; cin >> u >> v;
        int t; cin >> t;
        g[u].pb({v, t});
    }
    for(int i = n - 1; i >= 0; i--){
        for(int j = 0; j <= 40; j++){
            for(int x = 0; x < k; x++)
                dist[i][j][x] = 1e9 + 1;
        }
        for(auto ed : g[i]){
            int to = ed.f, x = ed.s;
            dist[i][1][to % k] = x;
        }
        for(int j = 2; j <= 40; j++){
            for(int x = 0; x < k; x++){
                for(auto ed : g[i]){
                    int to = ed.f;
                    dist[i][j][x] = min(dist[i][j][x], dist[to][j - 1][x] + dist[i][1][to % k]);
                }
            }
        }
    }
    while(o--){
        int a, b; cin >> a >> b;
        cout << get(a, b) << "\n";
    }
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 337 ms 44140 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 4 ms 1084 KB Output is correct
6 Correct 3 ms 1092 KB Output is correct
7 Correct 5 ms 1108 KB Output is correct
8 Correct 123 ms 44076 KB Output is correct
9 Correct 110 ms 43980 KB Output is correct
10 Correct 58 ms 41640 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 250 ms 45892 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 308 KB Output is correct
7 Correct 22 ms 1216 KB Output is correct
8 Correct 27 ms 1292 KB Output is correct
9 Correct 119 ms 44064 KB Output is correct
10 Correct 336 ms 47796 KB Output is correct
11 Correct 279 ms 45976 KB Output is correct
12 Correct 192 ms 45004 KB Output is correct
13 Correct 337 ms 32280 KB Output is correct
14 Correct 176 ms 29132 KB Output is correct
15 Correct 189 ms 28360 KB Output is correct
16 Correct 188 ms 28232 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 1108 KB Output is correct
7 Correct 3 ms 1236 KB Output is correct
8 Correct 10 ms 1348 KB Output is correct
9 Correct 6 ms 1168 KB Output is correct
10 Correct 81 ms 43972 KB Output is correct
11 Correct 154 ms 45688 KB Output is correct
12 Correct 247 ms 47564 KB Output is correct
13 Correct 268 ms 48376 KB Output is correct
14 Correct 234 ms 46540 KB Output is correct
15 Correct 167 ms 28248 KB Output is correct
16 Correct 164 ms 28280 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 1108 KB Output is correct
7 Correct 3 ms 1236 KB Output is correct
8 Correct 10 ms 1348 KB Output is correct
9 Correct 6 ms 1168 KB Output is correct
10 Correct 81 ms 43972 KB Output is correct
11 Correct 154 ms 45688 KB Output is correct
12 Correct 247 ms 47564 KB Output is correct
13 Correct 268 ms 48376 KB Output is correct
14 Correct 234 ms 46540 KB Output is correct
15 Correct 167 ms 28248 KB Output is correct
16 Correct 164 ms 28280 KB Output is correct
17 Correct 187 ms 45660 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 312 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 7 ms 1160 KB Output is correct
24 Correct 8 ms 1236 KB Output is correct
25 Correct 13 ms 1364 KB Output is correct
26 Correct 11 ms 1312 KB Output is correct
27 Correct 91 ms 43996 KB Output is correct
28 Correct 282 ms 47632 KB Output is correct
29 Correct 300 ms 48372 KB Output is correct
30 Correct 225 ms 46540 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 337 ms 44140 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 4 ms 1084 KB Output is correct
6 Correct 3 ms 1092 KB Output is correct
7 Correct 5 ms 1108 KB Output is correct
8 Correct 123 ms 44076 KB Output is correct
9 Correct 110 ms 43980 KB Output is correct
10 Correct 58 ms 41640 KB Output is correct
11 Correct 250 ms 45892 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 308 KB Output is correct
17 Correct 22 ms 1216 KB Output is correct
18 Correct 27 ms 1292 KB Output is correct
19 Correct 119 ms 44064 KB Output is correct
20 Correct 336 ms 47796 KB Output is correct
21 Correct 279 ms 45976 KB Output is correct
22 Correct 192 ms 45004 KB Output is correct
23 Correct 337 ms 32280 KB Output is correct
24 Correct 176 ms 29132 KB Output is correct
25 Correct 189 ms 28360 KB Output is correct
26 Correct 188 ms 28232 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 312 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 2 ms 1108 KB Output is correct
33 Correct 3 ms 1236 KB Output is correct
34 Correct 10 ms 1348 KB Output is correct
35 Correct 6 ms 1168 KB Output is correct
36 Correct 81 ms 43972 KB Output is correct
37 Correct 154 ms 45688 KB Output is correct
38 Correct 247 ms 47564 KB Output is correct
39 Correct 268 ms 48376 KB Output is correct
40 Correct 234 ms 46540 KB Output is correct
41 Correct 167 ms 28248 KB Output is correct
42 Correct 164 ms 28280 KB Output is correct
43 Correct 187 ms 45660 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 1 ms 312 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 7 ms 1160 KB Output is correct
50 Correct 8 ms 1236 KB Output is correct
51 Correct 13 ms 1364 KB Output is correct
52 Correct 11 ms 1312 KB Output is correct
53 Correct 91 ms 43996 KB Output is correct
54 Correct 282 ms 47632 KB Output is correct
55 Correct 300 ms 48372 KB Output is correct
56 Correct 225 ms 46540 KB Output is correct
57 Correct 491 ms 49176 KB Output is correct
58 Correct 123 ms 44092 KB Output is correct
59 Correct 313 ms 45992 KB Output is correct