# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
551979 | aadit_ambadkar | Burza (COCI16_burza) | C++11 | 59 ms | 3216 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define pb push_back
vector<int>v[402], q[402];
int n, k, level[402], st[402], dr[402], pz;
void dfs(int nod, int dad)
{
if(nod)
level[nod] = level[dad] + 1;
if(level[nod] == k-1)
{
st[nod] = pz++;
dr[nod] = pz;
return;
}
st[nod] = pz;
for(int i = 0; i < v[nod].size(); ++i)
{
int vecin = v[nod][i];
if(vecin == dad)
continue;
dfs(vecin, nod);
}
dr[nod] = 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(int jj = 0; jj < q[i].size(); ++jj)
{
int it = q[i][jj];
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--;
v[a].push_back(b);
v[b].push_back(a);
}
level[0]=-1;
dfs(0, -1);
cout << (solve() ? "DA\n" : "NE\n");
}
Compilation message (stderr)
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
Fetching results... |