oj.uz

Submission #978938

# Submission time Handle Problem Language Result Execution time Memory
978938 2024-05-10T03:59:02 Z hotboy2703 Escape Route (JOI21_escape_route) C++17
100 / 100
 1565 ms 331732 KB 
#include "escape_route.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define BIT(mask,i) (((mask) >> (i))&1LL)
#define MASK(i) (1LL << (i))
#define MP make_pair
#define pll pair <ll,ll>
#define fi first
#define se second
#define sz(a) (ll((a).size()))
namespace{
    const ll MAXN = 90;
    const ll INF = 1e18;
    ll n,m,s,q;
    ll c[MAXN+10][MAXN+10],l[MAXN+10][MAXN+10];
    ll st[MAXN+10][MAXN+10][MAXN+10],en[MAXN+10][MAXN+10][MAXN+10];
    ll pre[MAXN+10][MAXN+10];
    bool used[MAXN+10];
    ll dist[MAXN+10];
    ll last_c[MAXN+10];
    struct query{
        ll u,v,t,id;
    };
    vector <query> all_query;
    vector <ll> ans;
    void solve(){
        ans.resize(sz(all_query));
        sort(all_query.begin(),all_query.end(),[&](query x,query y){return x.u < y.u;});
        for (ll i = 1;i <= n;i ++){
            for (ll j = 1;j <= n;j ++){dist[j] = INF;used[j] = 0;}
            dist[i] = 0;
            for (ll z = 1;z <= n;z ++){
                ll u = 0;
                for (ll j = 1;j <= n;j ++){
                    if (!used[j] && (!u || dist[j] < dist[u]))u=j;
                }
                used[u] = 1;
                for (ll v = 1;v <= n;v ++){
                    if (used[v])continue;
                    if (c[u][v] == 0)continue;
                    ll x = dist[u]%s;
                    ll w;
                    if (x + l[u][v] > c[u][v])w = dist[u]+s-x+l[u][v];
                    else w = dist[u]+l[u][v];
                    dist[v] = min(dist[v],w);
                }
            }
            for (ll j = 1;j <= n;j ++)pre[i][j] = dist[j];
        }
        for (ll i = 1;i <= n;i ++){
            for (ll k = 1;k <= n;k ++){
                for (ll j = 1;j <= n;j ++){dist[j] = INF;used[j] = 0;}
                dist[i] = c[i][k];
                for (ll z = 1;z <= n;z ++){
                    ll u = 0;
                    for (ll j = 1;j <= n;j ++){
                        if (!used[j] && (!u || dist[j] < dist[u]))u=j;
                    }
                    used[u] = 1;
                    for (ll v = 1;v <= n;v ++){
                        if (used[v])continue;
                        if (c[u][v] == 0)continue;
                        if (dist[u] + l[u][v] <= min(c[u][v],dist[v]))dist[v] = dist[u] + l[u][v];
                    }
                }
                for (ll j = 1;j <= n;j ++)en[i][k][j] = dist[j];
            }
        }
        for (ll i = 1;i <= n;i ++){
            for (ll k = 1;k <= n;k ++){
                for (ll j = 1;j <= n;j ++){dist[j] = -INF;used[j] = 0;}
                dist[i] = c[i][k];
                for (ll z = 1;z <= n;z ++){
                    ll u = 0;
                    for (ll j = 1;j <= n;j ++){
                        if (!used[j] && (!u || dist[j] > dist[u]))u=j;
                    }
                    used[u] = 1;
                    for (ll v = 1;v <= n;v ++){
                        if (used[v])continue;
                        if (c[u][v] == 0)continue;
                        if (min(dist[u],c[u][v]) - l[u][v] >= max(0LL,dist[v]))dist[v] = min(dist[u],c[u][v]) - l[u][v];
                    }
                }
                for (ll j = 1;j <= n;j ++)st[i][k][j] = dist[j];
            }
        }
        sort(all_query.begin(),all_query.end(),[&](query x,query y){
                if (x.u != y.u)return x.u<y.u;
                else return x.t > y.t;

             });
        for (ll i = 1,ptr1 = 0;i <= n;i ++){

            vector <pair <ll,pll > > pos;
            for (ll j = 1;j <= n;j ++){
                for (ll k = 1;k <= n;k ++){
                    if (st[j][k][i] >= 0){
                        pos.push_back(MP(st[j][k][i],MP(j,k)));
                    }
                }
            }
            sort(pos.begin(),pos.end(),[&](pair <ll,pll > x, pair <ll,pll > y){return x.fi > y.fi;});
            for (ll j = 1;j <= n;j ++){
                dist[j] = INF;
            }
            dist[i]=0;
            ll ptr2 = 0;
            for (;ptr1 < sz(all_query) && all_query[ptr1].u==i;ptr1++){
//                cout<<ptr1<<endl;
                for (;ptr2 < sz(pos) && pos[ptr2].fi >= all_query[ptr1].t;ptr2++){
                    for (ll j = 1;j <= n;j ++){
                        if (en[pos[ptr2].se.fi][pos[ptr2].se.se][j] != INF){
                            dist[j] = min(dist[j],en[pos[ptr2].se.fi][pos[ptr2].se.se][j]-st[pos[ptr2].se.fi][pos[ptr2].se.se][i]);
                        }
                    }
                }
                if (dist[all_query[ptr1].v]!=INF)ans[all_query[ptr1].id] = dist[all_query[ptr1].v];
                else {
                    ans[all_query[ptr1].id] = INF;
                    for (ll j = 1;j <= n;j ++){
                        if (dist[j] != INF)ans[all_query[ptr1].id] = min(ans[all_query[ptr1].id],pre[j][all_query[ptr1].v]+s-all_query[ptr1].t);
                    }
                }
            }
        }

    }
}
std::vector<long long> calculate_necessary_time(
    int N, int M, long long S, int Q,
    std::vector<int> A, std::vector<int> B, std::vector<long long> L, std::vector<long long> C,
    std::vector<int> U, std::vector<int> V, std::vector<long long> T) {
    n = N,m = M,s = S,q = Q;
    for (ll i = 1;i <= n;i ++){
        for (ll j = 1;j <= n;j ++){
            c[i][j] = 0;
            l[i][j] = 1;
        }
    }
    for (ll i = 0;i < m;i ++){
        ll u,v;
        u = A[i]+1,v = B[i]+1;
        c[u][v] = c[v][u] = C[i];
        l[u][v] = l[v][u] = L[i];
    }
    for (ll i = 0;i < q;i ++){
        all_query.push_back({U[i]+1,V[i]+1,T[i],i});
    }
    solve();

    return ans;
}

Compilation message

escape_route.cpp:22:8: warning: '{anonymous}::last_c' defined but not used [-Wunused-variable]
   22 |     ll last_c[MAXN+10];
      |        ^~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 65116 KB Output is correct
2 Correct 29 ms 65156 KB Output is correct
3 Correct 45 ms 65116 KB Output is correct
4 Correct 9 ms 65272 KB Output is correct
5 Correct 28 ms 65036 KB Output is correct
6 Correct 24 ms 65112 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 645 ms 277172 KB Output is correct
2 Correct 665 ms 300208 KB Output is correct
3 Correct 701 ms 281968 KB Output is correct
4 Correct 686 ms 310592 KB Output is correct
5 Correct 698 ms 310968 KB Output is correct
6 Correct 10 ms 65112 KB Output is correct
7 Correct 678 ms 281788 KB Output is correct
8 Correct 967 ms 324104 KB Output is correct
9 Correct 622 ms 270384 KB Output is correct
10 Correct 713 ms 311272 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 65116 KB Output is correct
2 Correct 29 ms 65156 KB Output is correct
3 Correct 45 ms 65116 KB Output is correct
4 Correct 9 ms 65272 KB Output is correct
5 Correct 28 ms 65036 KB Output is correct
6 Correct 24 ms 65112 KB Output is correct
7 Correct 645 ms 277172 KB Output is correct
8 Correct 665 ms 300208 KB Output is correct
9 Correct 701 ms 281968 KB Output is correct
10 Correct 686 ms 310592 KB Output is correct
11 Correct 698 ms 310968 KB Output is correct
12 Correct 10 ms 65112 KB Output is correct
13 Correct 678 ms 281788 KB Output is correct
14 Correct 967 ms 324104 KB Output is correct
15 Correct 622 ms 270384 KB Output is correct
16 Correct 713 ms 311272 KB Output is correct
17 Correct 651 ms 280320 KB Output is correct
18 Correct 636 ms 279184 KB Output is correct
19 Correct 674 ms 303180 KB Output is correct
20 Correct 785 ms 284560 KB Output is correct
21 Correct 722 ms 312568 KB Output is correct
22 Correct 741 ms 313648 KB Output is correct
23 Correct 678 ms 283436 KB Output is correct
24 Correct 917 ms 325736 KB Output is correct
25 Correct 658 ms 271824 KB Output is correct
26 Correct 725 ms 313876 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 65116 KB Output is correct
2 Correct 29 ms 65156 KB Output is correct
3 Correct 45 ms 65116 KB Output is correct
4 Correct 9 ms 65272 KB Output is correct
5 Correct 28 ms 65036 KB Output is correct
6 Correct 24 ms 65112 KB Output is correct
7 Correct 645 ms 277172 KB Output is correct
8 Correct 665 ms 300208 KB Output is correct
9 Correct 701 ms 281968 KB Output is correct
10 Correct 686 ms 310592 KB Output is correct
11 Correct 698 ms 310968 KB Output is correct
12 Correct 10 ms 65112 KB Output is correct
13 Correct 678 ms 281788 KB Output is correct
14 Correct 967 ms 324104 KB Output is correct
15 Correct 622 ms 270384 KB Output is correct
16 Correct 713 ms 311272 KB Output is correct
17 Correct 651 ms 280320 KB Output is correct
18 Correct 636 ms 279184 KB Output is correct
19 Correct 674 ms 303180 KB Output is correct
20 Correct 785 ms 284560 KB Output is correct
21 Correct 722 ms 312568 KB Output is correct
22 Correct 741 ms 313648 KB Output is correct
23 Correct 678 ms 283436 KB Output is correct
24 Correct 917 ms 325736 KB Output is correct
25 Correct 658 ms 271824 KB Output is correct
26 Correct 725 ms 313876 KB Output is correct
27 Correct 764 ms 284952 KB Output is correct
28 Correct 750 ms 284376 KB Output is correct
29 Correct 815 ms 308536 KB Output is correct
30 Correct 877 ms 288180 KB Output is correct
31 Correct 869 ms 316400 KB Output is correct
32 Correct 844 ms 317636 KB Output is correct
33 Correct 1025 ms 329852 KB Output is correct
34 Correct 747 ms 274932 KB Output is correct
35 Correct 859 ms 317160 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 65116 KB Output is correct
2 Correct 29 ms 65156 KB Output is correct
3 Correct 45 ms 65116 KB Output is correct
4 Correct 9 ms 65272 KB Output is correct
5 Correct 28 ms 65036 KB Output is correct
6 Correct 24 ms 65112 KB Output is correct
7 Correct 645 ms 277172 KB Output is correct
8 Correct 665 ms 300208 KB Output is correct
9 Correct 701 ms 281968 KB Output is correct
10 Correct 686 ms 310592 KB Output is correct
11 Correct 698 ms 310968 KB Output is correct
12 Correct 10 ms 65112 KB Output is correct
13 Correct 678 ms 281788 KB Output is correct
14 Correct 967 ms 324104 KB Output is correct
15 Correct 622 ms 270384 KB Output is correct
16 Correct 713 ms 311272 KB Output is correct
17 Correct 651 ms 280320 KB Output is correct
18 Correct 636 ms 279184 KB Output is correct
19 Correct 674 ms 303180 KB Output is correct
20 Correct 785 ms 284560 KB Output is correct
21 Correct 722 ms 312568 KB Output is correct
22 Correct 741 ms 313648 KB Output is correct
23 Correct 678 ms 283436 KB Output is correct
24 Correct 917 ms 325736 KB Output is correct
25 Correct 658 ms 271824 KB Output is correct
26 Correct 725 ms 313876 KB Output is correct
27 Correct 764 ms 284952 KB Output is correct
28 Correct 750 ms 284376 KB Output is correct
29 Correct 815 ms 308536 KB Output is correct
30 Correct 877 ms 288180 KB Output is correct
31 Correct 869 ms 316400 KB Output is correct
32 Correct 844 ms 317636 KB Output is correct
33 Correct 1025 ms 329852 KB Output is correct
34 Correct 747 ms 274932 KB Output is correct
35 Correct 859 ms 317160 KB Output is correct
36 Correct 1395 ms 286152 KB Output is correct
37 Correct 1386 ms 285096 KB Output is correct
38 Correct 1493 ms 290356 KB Output is correct
39 Correct 1535 ms 317332 KB Output is correct
40 Correct 1565 ms 318004 KB Output is correct
41 Correct 1373 ms 331732 KB Output is correct
42 Correct 1418 ms 277096 KB Output is correct
43 Correct 1418 ms 281208 KB Output is correct