oj.uz

Submission #1113943

# Submission time Handle Problem Language Result Execution time Memory
1113943 2024-11-17T21:41:50 Z lucascgar Cyberland (APIO23_cyberland) C++17
0 / 100
 3000 ms 86788 KB 
#include <bits/stdc++.h>

using namespace std;

/*

*/

typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long double, long double> pdd;

const int MAXN = 1e5+10, MAXK = 30+15;
const long long BIG = 1e18+8;

const long double PRECISION = 1e-7;

vector<pair<int, long double>> e[MAXN];

long double ds[MAXN][MAXK];

bool r[MAXN];

void dfs(int x){
    r[x] = 1;
    for (auto &[i,cst]:e[x]) if (!r[i]) dfs(i);
}

long double solve(int n, int m, int k, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr){

    for (int i=0;i<n;i++){
        e[i].clear();
        for (int j=0;j<=k;j++) ds[i][j]=BIG;
        r[i] = 0;
    }

    for (int i=0;i<m;i++){
        int a = x[i], b = y[i];
        e[a].emplace_back(b, c[i]);
        e[b].emplace_back(a,c[i]);
    }
    dfs(0);
    typedef tuple<long double, int, int> node;  // {dst, qntk, u}
    priority_queue<node, vector<node>, greater<>> q;
    for (int i=0;i<n;i++) if (!i || (r[i] && arr[i]==0)){
        ds[i][0] = 0;
        q.emplace(0, 0, i);
    }

    while (!q.empty()){
        auto [d, qk, u] = q.top();
        q.pop();

        if (u == H) continue;

        for (auto &[i, cs]:e[u]){
            long double nc = d+cs;
            // sem usar
            if (ds[i][qk]>nc){
                ds[i][qk] = nc;
                q.emplace(nc, qk, i);
            }

            // usando

            nc /= 2.00;
            if (qk<k && arr[i] == 2 && ds[i][qk+1]> nc){
                ds[i][qk+1] = nc;
                q.emplace(nc, qk+1, i);
            }
        }
    }
    long double ans = BIG;
    for (int i=0;i<=k;i++) ans = min(ans, ds[H][i]);
 
    // cerr << ds[1][4] << '\n';

    if (ans == BIG) return -1;
    return ans;

}

Subtask #1
0.0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 3408 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 5712 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 35 ms 5712 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 1856 ms 86788 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #5
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 5968 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 32 ms 5968 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #7
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 554 ms 7696 KB Wrong Answer.
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3050 ms 17736 KB Time limit exceeded
2 Halted 0 ms 0 KB -