oj.uz

Submission #824239

# Submission time Handle Problem Language Result Execution time Memory
824239 2023-08-13T20:08:11 Z Liudas Radio Towers (IOI22_towers) C++17
0 / 100
 4000 ms 1052200 KB 
#include "towers.h"

#include <cassert>
#include <cstdio>

#include <bits/stdc++.h>
using namespace std;
vector<int> H;
int N;
void init(int n, vector<int> h){
    H = h;
    N = n;
}
void dfs(int head, vector<bool> &vis, vector<set<int>> &tree, int c, int &S, set<int> can){
    vis[head] = true;
    set<int> ncan;
    for(int i : can){
        if(tree[head].find(i) != tree[head].end()){
            ncan.insert(i);
        }
    }
    for(int i : ncan){
        if(!vis[i]){
            dfs(i, vis, tree, c + 1, S, ncan);
        }
    }
    S = max(S, c);
}
int max_towers(int L, int R, int D){
    vector<set<int>> tree(N);
    for(int i = L; i <= R; i ++){
        int maxi = H[i];
        for(int j = i; j <= R; j ++){
            if(H[i] + D <= maxi && H[j] + D <= maxi){
                tree[i].insert(j);
                tree[j].insert(i);
            }
            maxi = max(maxi, H[j]);
        }
    }
    int S = 0;
    for(int i = L; i <= R; i ++){
        vector<bool> vis(N);
        set<int> can;
        for(int j : tree[i]){
            can.insert(j);
        }
        dfs(i, vis, tree, 1, S, can);
    }
    return S;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4059 ms 3596 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 336 KB Output is correct
2 Execution timed out 4073 ms 52356 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 336 KB Output is correct
2 Execution timed out 4073 ms 52356 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4103 ms 1052200 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4094 ms 957744 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 336 KB Output is correct
2 Execution timed out 4073 ms 52356 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4059 ms 3596 KB Time limit exceeded
2 Halted 0 ms 0 KB -