oj.uz

Submission #1062582

# Submission time Handle Problem Language Result Execution time Memory
1062582 2024-08-17T08:51:45 Z vjudge1 Comparing Plants (IOI20_plants) C++17
0 / 100
 1 ms 348 KB 
#include "plants.h"
 
#include <bits/stdc++.h>
 
using namespace std;
 
using vi = vector<int>;
 
vector<vi> L;
 
vi dfs(int u0) {
    int n = int(L.size());
    vi viz(n, 0);
 
    function<void(int)> dfs0 = [&](int u) {
        if(viz[u]) return;
        viz[u] = 1;
        for(auto it : L[u]) {
            if(it != u)
                dfs0(it);
        }
    };
    dfs0(u0);
    return viz;
}
 
vector<vi> Reach;
 
void init(int k, vi r) {
    int n = int(r.size());
    vi active(n, 1);
    L.resize(n);
 
    set<int> Zero;
    for(int i = 0; i < n; ++i)
        if(!r[i]) Zero.insert(i);
 
    for(int i = 0; i < n; ++i) {
        int v = 0;
        for(auto it : Zero) {
            int ok = 1;
            for(int j = 1; j < k; ++j) {
                int p = (it - j + n) % n;
                if(active[p] && !r[p]) {
                    ok = 0;
                    break;
                }
            }
            if(ok) {
                v = it;
                break;
            }
        }
        Zero.erase(v);
        active[v] = 0;
        for(int j = 1; j < k; ++j) {
            int p = (v - j + n) % n;
            if(active[p]) {
                --r[p];
                if(!r[p]) {
                    //L[v].push_back(p);
                    Zero.insert(p);
                }
            }
            ///^ oare si fara !r[p] e ok rationamentul
            int p2 = (v + j) % n;
            if(active[p2]) {
                L[v].push_back(p2); /// nu puteau fi popite
            }
        }
    }
    for(int i = 0; i < n; ++i)
        Reach.push_back(dfs(i));
}
 
 
int compare_plants(int x, int y) {
    if(Reach[x][y]) return 1;
    if(Reach[y][x]) return -1;
	return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -