#include <bits/stdc++.h>
#pragma GCC optimize ("Ofast", "unroll-loops")
using namespace std;
#define ll long long
#define int ll
#define FOR(i,a,b) for (int i = (a); i<(b); i++)
#define REP(i,n) FOR(i,0,n)
#define REP1(i,n) FOR(i,1,n+1)
#define RREP(i,n) for (int i=(n)-1; i>=0; i--)
#define f first
#define s second
#define pb push_back
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)(x.size())
#define SQ(x) (x)*(x)
#define pii pair<int, int>
#define pdd pair<double ,double>
#define pcc pair<char, char>
#define endl '\n'
//#define TOAD
#ifdef TOAD
#define bug(x) cerr<<__LINE__<<": "<<#x<<" is "<<x<<endl
#define IOS()
#else
#define bug(...)
#define IOS() ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#endif
const ll inf = 1ll<<60;
const int iinf=2147483647;
const ll mod = 1e9+7;
const ll maxn=2005;
const double PI=acos(-1);
ll pw(ll x, ll p, ll m=mod){
ll ret=1;
while (p>0){
if (p&1){
ret*=x;
ret%=m;
}
x*=x;
x%=m;
p>>=1;
}
return ret;
}
ll inv(ll a, ll m=mod){
return pw(a,m-2);
}
//=======================================================================================
vector<int> graph[maxn];
vector<int> typ(maxn);
vector<int> tot(maxn);
vector<int> c(maxn);
void dfs(int x, int prev, int lay){
if (lay!=0){
if (typ[lay]!=0){
typ[lay]=-1;
}
else {
typ[lay]=c[x];
}
}
REP(i,SZ(graph[x])){
if (graph[x][i]==prev) continue;
dfs(graph[x][i], x, lay+1);
}
}
signed main (){
IOS();
int n; cin>>n;
int m; cin>>m;
REP(i,n-1){
int x, y; cin>>x>>y;
graph[x].pb(y);
graph[y].pb(x);
}
REP1(i, n) cin>>c[i];
FOR(i,1,n+1){
REP(i, n+1){
typ[i]=0;
tot[i]=0;
}
dfs(i, -1, 0);
int ans=0;
REP1(j, n){
if (typ[j]!=-1){
tot[typ[j]]=1;
}
}
REP1(j, m){
ans+=tot[j];
}
cout<<ans<<endl;
}
}
/*
2 3
2 1
2 1
2
2
2
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
90 ms |
496 KB |
Output is correct |
3 |
Correct |
25 ms |
500 KB |
Output is correct |
4 |
Correct |
95 ms |
512 KB |
Output is correct |
5 |
Correct |
99 ms |
500 KB |
Output is correct |
6 |
Correct |
104 ms |
560 KB |
Output is correct |
7 |
Correct |
101 ms |
468 KB |
Output is correct |
8 |
Correct |
105 ms |
508 KB |
Output is correct |
9 |
Correct |
122 ms |
516 KB |
Output is correct |
10 |
Correct |
105 ms |
504 KB |
Output is correct |
11 |
Correct |
106 ms |
488 KB |
Output is correct |
12 |
Correct |
75 ms |
504 KB |
Output is correct |
13 |
Correct |
116 ms |
564 KB |
Output is correct |
14 |
Correct |
99 ms |
468 KB |
Output is correct |
15 |
Correct |
101 ms |
468 KB |
Output is correct |
16 |
Correct |
55 ms |
436 KB |
Output is correct |
17 |
Correct |
87 ms |
468 KB |
Output is correct |
18 |
Correct |
97 ms |
528 KB |
Output is correct |
19 |
Correct |
102 ms |
468 KB |
Output is correct |
20 |
Correct |
103 ms |
468 KB |
Output is correct |
21 |
Correct |
105 ms |
468 KB |
Output is correct |
22 |
Correct |
101 ms |
496 KB |
Output is correct |
23 |
Correct |
111 ms |
508 KB |
Output is correct |
24 |
Correct |
113 ms |
504 KB |
Output is correct |
25 |
Correct |
106 ms |
468 KB |
Output is correct |
26 |
Correct |
63 ms |
468 KB |
Output is correct |
27 |
Correct |
115 ms |
544 KB |
Output is correct |
28 |
Correct |
89 ms |
536 KB |
Output is correct |
29 |
Correct |
100 ms |
520 KB |
Output is correct |
30 |
Correct |
56 ms |
516 KB |
Output is correct |
31 |
Correct |
78 ms |
552 KB |
Output is correct |
32 |
Correct |
84 ms |
468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
1 ms |
596 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
1 ms |
596 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
90 ms |
496 KB |
Output is correct |
3 |
Correct |
25 ms |
500 KB |
Output is correct |
4 |
Correct |
95 ms |
512 KB |
Output is correct |
5 |
Correct |
99 ms |
500 KB |
Output is correct |
6 |
Correct |
104 ms |
560 KB |
Output is correct |
7 |
Correct |
101 ms |
468 KB |
Output is correct |
8 |
Correct |
105 ms |
508 KB |
Output is correct |
9 |
Correct |
122 ms |
516 KB |
Output is correct |
10 |
Correct |
105 ms |
504 KB |
Output is correct |
11 |
Correct |
106 ms |
488 KB |
Output is correct |
12 |
Correct |
75 ms |
504 KB |
Output is correct |
13 |
Correct |
116 ms |
564 KB |
Output is correct |
14 |
Correct |
99 ms |
468 KB |
Output is correct |
15 |
Correct |
101 ms |
468 KB |
Output is correct |
16 |
Correct |
55 ms |
436 KB |
Output is correct |
17 |
Correct |
87 ms |
468 KB |
Output is correct |
18 |
Correct |
97 ms |
528 KB |
Output is correct |
19 |
Correct |
102 ms |
468 KB |
Output is correct |
20 |
Correct |
103 ms |
468 KB |
Output is correct |
21 |
Correct |
105 ms |
468 KB |
Output is correct |
22 |
Correct |
101 ms |
496 KB |
Output is correct |
23 |
Correct |
111 ms |
508 KB |
Output is correct |
24 |
Correct |
113 ms |
504 KB |
Output is correct |
25 |
Correct |
106 ms |
468 KB |
Output is correct |
26 |
Correct |
63 ms |
468 KB |
Output is correct |
27 |
Correct |
115 ms |
544 KB |
Output is correct |
28 |
Correct |
89 ms |
536 KB |
Output is correct |
29 |
Correct |
100 ms |
520 KB |
Output is correct |
30 |
Correct |
56 ms |
516 KB |
Output is correct |
31 |
Correct |
78 ms |
552 KB |
Output is correct |
32 |
Correct |
84 ms |
468 KB |
Output is correct |
33 |
Runtime error |
1 ms |
596 KB |
Execution killed with signal 11 |
34 |
Halted |
0 ms |
0 KB |
- |