oj.uz

Submission #1036080

# Submission time Handle Problem Language Result Execution time Memory
1036080 2024-07-27T03:25:10 Z ToTenLinh Robot (JOI21_ho_t4) C++14
100 / 100
 842 ms 113112 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define endl "\n"
#define len(s) (int)((s).size())
#define MASK(k)(1LL<<(k))
#define int long long

using namespace std;

typedef tuple<int, int, int> tpiii;
typedef pair<double, double> pdd;
typedef pair<int, int> pii;
typedef long long ll;

const long long OO = 1e18;
const int MOD = 1e9 + 7;
const int INF = 1e9;
const int MX = 200005;

struct Edge{
    int u, v, c, col;

    Edge(int u=0, int v=0, int col=0, int c=0){
        this->u = u;
        this->v = v;
        this->col = col;
        this->c = c;
    }

    int other(int x){
        return u ^ v ^ x;
    }
};

int n, m;
Edge edges[MX];
vector<int> G[MX];
map<int, vector<int>> T[MX];

void nhap(){
    cin >> n >> m;
    for(int i=1; i<=m; i++){
        int u, v, col, c;
        cin >> u >> v >> col >> c;
        edges[i] = Edge(u, v, col, c);
        G[u].push_back(i);
        G[v].push_back(i);
        T[u][col].push_back(i);
        T[v][col].push_back(i);
    }
}

int d[MX];
map<int, int> sum[MX];
map<int, int> f[MX];

void solve(){
    for(int i=1; i<=m; i++){
        int u = edges[i].u;
        int v = edges[i].v;
        int c = edges[i].c;
        int col = edges[i].col;
        sum[u][col] += c;
        sum[v][col] += c;
    }

    priority_queue<tpiii, vector<tpiii>, greater<tpiii>> Q;
    memset(d, 0x3f, sizeof d);
    d[1] = 0;
    Q.push({0, -1, 1});
    while(Q.size()){
        int du, cl, u;
        tie(du, cl, u) = Q.top();
        Q.pop();
        if(cl == -1 && d[u] != du) continue;
        if(cl != -1 && f[u][cl] != du) continue;
        if(cl == -1){
            for(int i: G[u]){
                int c = edges[i].c;
                int cl = edges[i].col;
                int v = edges[i].other(u);
                int scl = sum[u][cl];
                if(f[v].find(cl) == f[v].end()) f[v][cl] = 1e18;
                if(d[v] > min(du + c , du + scl - c)){
                    d[v] = min(du + c , du + scl - c);
                    Q.push({d[v], -1, v});
                }
                if(f[v][cl] > du){
                    f[v][cl] = du;
                    Q.push({f[v][cl], cl, v});
                }
            }
        }
        else{
            for(int i: T[u][cl]){
                int c = edges[i].c;
                int v = edges[i].other(u);
                int scl = sum[u][cl];
                if(d[v] > du + scl - c){
                    d[v] = du + scl - c;
                    Q.push({d[v], -1, v});
                }
            }
        }
    }
    cout << (d[n] == d[0]? -1 : d[n]);
}

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    //freopen("robot1.inp","r",stdin);
    //freopen("robot1.out","w",stdout);
    nhap();
    solve();

    return 0;
}

Subtask #1
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 41048 KB Output is correct
2 Correct 17 ms 41140 KB Output is correct
3 Correct 17 ms 41048 KB Output is correct
4 Correct 17 ms 41012 KB Output is correct
5 Correct 17 ms 41136 KB Output is correct
6 Correct 17 ms 41052 KB Output is correct
7 Correct 22 ms 41360 KB Output is correct
8 Correct 18 ms 41052 KB Output is correct
9 Correct 20 ms 41740 KB Output is correct
10 Correct 19 ms 41564 KB Output is correct
11 Correct 18 ms 41308 KB Output is correct
12 Correct 18 ms 41308 KB Output is correct
13 Correct 19 ms 41560 KB Output is correct
14 Correct 22 ms 41560 KB Output is correct
15 Correct 19 ms 41308 KB Output is correct
16 Correct 18 ms 41304 KB Output is correct
17 Correct 19 ms 41564 KB Output is correct
18 Correct 17 ms 41244 KB Output is correct
19 Correct 18 ms 41308 KB Output is correct
20 Correct 18 ms 41308 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 125 ms 62052 KB Output is correct
2 Correct 71 ms 52104 KB Output is correct
3 Correct 133 ms 58632 KB Output is correct
4 Correct 90 ms 55304 KB Output is correct
5 Correct 700 ms 111792 KB Output is correct
6 Correct 599 ms 103084 KB Output is correct
7 Correct 243 ms 79772 KB Output is correct
8 Correct 290 ms 78160 KB Output is correct
9 Correct 324 ms 78264 KB Output is correct
10 Correct 224 ms 76676 KB Output is correct
11 Correct 93 ms 60240 KB Output is correct

Subtask #3
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 41048 KB Output is correct
2 Correct 17 ms 41140 KB Output is correct
3 Correct 17 ms 41048 KB Output is correct
4 Correct 17 ms 41012 KB Output is correct
5 Correct 17 ms 41136 KB Output is correct
6 Correct 17 ms 41052 KB Output is correct
7 Correct 22 ms 41360 KB Output is correct
8 Correct 18 ms 41052 KB Output is correct
9 Correct 20 ms 41740 KB Output is correct
10 Correct 19 ms 41564 KB Output is correct
11 Correct 18 ms 41308 KB Output is correct
12 Correct 18 ms 41308 KB Output is correct
13 Correct 19 ms 41560 KB Output is correct
14 Correct 22 ms 41560 KB Output is correct
15 Correct 19 ms 41308 KB Output is correct
16 Correct 18 ms 41304 KB Output is correct
17 Correct 19 ms 41564 KB Output is correct
18 Correct 17 ms 41244 KB Output is correct
19 Correct 18 ms 41308 KB Output is correct
20 Correct 18 ms 41308 KB Output is correct
21 Correct 125 ms 62052 KB Output is correct
22 Correct 71 ms 52104 KB Output is correct
23 Correct 133 ms 58632 KB Output is correct
24 Correct 90 ms 55304 KB Output is correct
25 Correct 700 ms 111792 KB Output is correct
26 Correct 599 ms 103084 KB Output is correct
27 Correct 243 ms 79772 KB Output is correct
28 Correct 290 ms 78160 KB Output is correct
29 Correct 324 ms 78264 KB Output is correct
30 Correct 224 ms 76676 KB Output is correct
31 Correct 93 ms 60240 KB Output is correct
32 Correct 103 ms 54164 KB Output is correct
33 Correct 102 ms 57052 KB Output is correct
34 Correct 274 ms 78076 KB Output is correct
35 Correct 186 ms 69220 KB Output is correct
36 Correct 216 ms 73156 KB Output is correct
37 Correct 247 ms 75696 KB Output is correct
38 Correct 262 ms 85916 KB Output is correct
39 Correct 105 ms 58108 KB Output is correct
40 Correct 283 ms 79432 KB Output is correct
41 Correct 306 ms 79872 KB Output is correct
42 Correct 334 ms 89464 KB Output is correct
43 Correct 127 ms 64288 KB Output is correct
44 Correct 252 ms 70044 KB Output is correct
45 Correct 234 ms 75376 KB Output is correct
46 Correct 207 ms 75092 KB Output is correct
47 Correct 255 ms 75000 KB Output is correct
48 Correct 842 ms 113112 KB Output is correct