oj.uz

Submission #913997

# Submission time Handle Problem Language Result Execution time Memory
913997 2024-01-20T17:51:54 Z duckier Burza (COCI16_burza) C++14
0 / 160
 884 ms 596 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

const int MAXN = 405, MAXK = 20, INF = 1e18;
int n, k, cnt, dep[MAXN], mn[MAXN], mx[MAXN], dp[1<<MAXK];
vector<int> adj[MAXN];

void dfs(int x, int p, int d) {
    dep[x] = d;
    if(d==k){
        cnt++;
        mn[x] = mx[x] = cnt;
        return;
    }
    for(int y : adj[x]) {
        if(y==p) continue;
        dfs(y, x, d + 1);
        mn[x] = min(mn[x], mn[y]);
        mx[x] = max(mx[x], mx[y]);
    }
}

signed main() {
    cin.tie(NULL)->sync_with_stdio(0);
    cin>>n>>k;
    if(k>20) {
        cout << "DA\n";
        return 0;
    }
    for(int i = 1; i < n; i++) {
        int x, y;
        cin>>x>>y;
        adj[x].push_back(y);
        adj[y].push_back(x);
    }
    for(int i = 1; i <= n; i++) {
        mn[i] = INF;
    }
    dfs(1, 0, 0);
    for(int i= 0; i < (1<<(k+1)) - 1;i++) {
        for(int j = 0;j < k; j++) {
            if((i>>j)&1) {
                int pr = dp[i^(1<<j)];
                for(int  i= 1; i <= n; i++) {
                    if(dep[i]!=j+1)continue;
                    int cmn = mn[i], cmx = mx[i];
                    if(cmn <= pr + 1) {
                        dp[i] = max(dp[i], cmx);
                    }
                }
            }
        }
    }
    for(int i = 1; i < (1<<(k+1)) - 1; i++) {
        if(dp[i] >= cnt) {
            int counter = 0;
            for(int j = 0; j < k; j++) {
                if((i>>j)&1) counter++;
            }
            if(counter<=k) {
                cout << "DA\n";
                return 0;
            }
        }
    }
    cout << "NE\n";
}

Subtask #1
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 75 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 884 ms 496 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 862 ms 484 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 183 ms 484 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 818 ms 592 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 863 ms 480 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 854 ms 480 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 172 ms 596 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 67 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 354 ms 480 KB Output isn't correct
2 Halted 0 ms 0 KB -