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답안 #551986

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
551986 2022-04-22T04:46:02 Z aadit_ambadkar Burza (COCI16_burza) C++11
160 / 160
 66 ms 3292 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
vector<int> adj[402], q[402];
int n, k, st[402], dr[402], level[402], pz;
 
void dfs(int u, int p) {
    if (u==p) return;
    if (u) {
        level[u]=level[p]+1;
    }
    if (level[u]==k-1) {
        st[u]=pz++;
        dr[u]=pz;
        return;
    }
    st[u]=pz;
    for (auto i : adj[u]) {
        if (i!=p) dfs(i, u);
    }
    dr[u]=pz;
}
 
bool dp[402][(1<<20)];
 
bool solve() {
    dp[0][0]=1;
    for (int i = 1; i < n; i++) {
        q[st[i]].push_back(i);
    }
    for (int i = 0; i < pz; i++) {
        for (int j = 0; j < (1<<k); j++) {
            if (!dp[i][j]) continue;
            for (auto it : q[i]) {
                if (!(j >> level[it] & 1)) {
                    dp[dr[it]][j | (1<<level[it])]=1;
                }
            }
        }
    }
    for (int j = 0; j < (1<<k); j++) {
        if (dp[pz][j]) return 1;
    }
    return 0;
}
 
int main() {
    cin >> n >> k;
    if (k*k >= n) {
        cout << "DA\n";
        return 0;
    }
    for (int i = 1; i < n; i++) {
        int a, b; cin >> a >> b;
        a--; b--;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    level[0]=-1;
    dfs(0, -1);
    cout << (solve() ? "DA\n" : "NE\n");
}

Subtask #1
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 852 KB Output is correct
2 Correct 38 ms 2412 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 2696 KB Output is correct
2 Correct 41 ms 2468 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 66 ms 2920 KB Output is correct
6 Correct 1 ms 980 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 47 ms 2808 KB Output is correct
2 Correct 44 ms 2400 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 424 KB Output is correct

Subtask #4
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 1332 KB Output is correct
2 Correct 63 ms 3292 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #5
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 39 ms 2260 KB Output is correct
2 Correct 48 ms 2836 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 852 KB Output is correct

Subtask #6
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 2632 KB Output is correct
2 Correct 50 ms 2764 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 724 KB Output is correct

Subtask #7
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 2968 KB Output is correct
2 Correct 51 ms 2740 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 61 ms 3140 KB Output is correct
6 Correct 1 ms 852 KB Output is correct

Subtask #8
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 1236 KB Output is correct
2 Correct 46 ms 2612 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 2 ms 980 KB Output is correct

Subtask #9
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 724 KB Output is correct
2 Correct 63 ms 3044 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 2 ms 980 KB Output is correct

Subtask #10
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 1624 KB Output is correct
2 Correct 59 ms 2948 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 21 ms 1580 KB Output is correct
6 Correct 1 ms 596 KB Output is correct