oj.uz

Submission #961046

# Submission time Handle Problem Language Result Execution time Memory
961046 2024-04-11T12:45:21 Z Huseyn123 Spring cleaning (CEOI20_cleaning) C++17
34 / 100
 1000 ms 62436 KB 
#include <bits/stdc++.h>
//#define int ll
#define MAX 1000001
#define INF INT_MAX
#define MOD 1000000007
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ins insert
#define ff first
#define ss second 
#define all(a) a.begin(),a.end()
#define lb(a,b) lower_bound(all(a),b)
#define ub(a,b) upper_bound(all(a),b)
#define sortv(a) sort(all(a))
#define outputar(a,b){\
    for(int i=0;i<b;i++){\
        cout << a[i] << " ";\
    }\
    cout << "\n";\
}
#define outputvec(a){\
    for(auto x:a){\
        cout << (int)x << " ";\
    }\
    cout << endl;\
}
#define reset(a,n,v){\
    for(int i=0;i<n;i++){\
        a[i]=v;\
    }\
}
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef tuple<ll,ll,ll> tll;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef double db;
typedef long double ldb;
inline void USACO(string filename){
  freopen((filename+".in").c_str(),"r",stdin);
  freopen((filename+".out").c_str(),"w",stdout);
}
int n,q,t=1,m,k,x,y,z,x2,y2,z2,a[MAX],b[MAX],c[MAX],ans[MAX];
ll res;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
string s[MAX],str[1];
//int e[1001][1001];
//bool e1[1001][1001]; 
string s1,s2,s3;
const int mod = 998244353;
int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};
vector<vector<int>> g;
void dfs(int v,int prev){
    c[v]=(g[v].size()==1);
    for(auto x:g[v]){
        if(x==prev){
            continue;
        }
        dfs(x,v);
        c[v]+=c[x];
    }
    res+=1-c[v]%2;
}
void solve(){
    cin >> n >> q;
    for(int i=0;i<n-1;i++){
        cin >> a[i] >> b[i];
    }
    for(int i=0;i<q;i++){
        cin >> m;
        g.clear();
        g.resize(n+m+1);
        for(int j=1;j<=m;j++){
            cin >> x;
            g[x].pb(n+j);
            g[n+j].pb(x);
        }
        for(int j=0;j<n-1;j++){
            g[a[j]].pb(b[j]);
            g[b[j]].pb(a[j]);
        }
        for(int j=1;j<=n+m;j++){
            c[j]=0;
        }
        res=n+m-1;
        dfs(1,-1);
        if(c[1]%2){
            cout << -1 << "\n";
        }
        else{
            cout << res-1 << "\n";
        }
    }
}
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    //cin >> t;
    ll cnt1=1;
    while(t--){
        solve();
    }
}

Compilation message

cleaning.cpp: In function 'int main()':
cleaning.cpp:103:8: warning: unused variable 'cnt1' [-Wunused-variable]
  103 |     ll cnt1=1;
      |        ^~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 39512 KB Output is correct
2 Execution timed out 1059 ms 43644 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 44888 KB Output is correct
2 Correct 20 ms 44892 KB Output is correct
3 Correct 32 ms 50560 KB Output is correct
4 Correct 38 ms 53704 KB Output is correct
5 Correct 44 ms 55676 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 45724 KB Output is correct
2 Correct 21 ms 45624 KB Output is correct
3 Correct 37 ms 57936 KB Output is correct
4 Correct 52 ms 62436 KB Output is correct
5 Correct 35 ms 56656 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 612 ms 44244 KB Output is correct
2 Correct 404 ms 43628 KB Output is correct
3 Correct 571 ms 42844 KB Output is correct
4 Correct 628 ms 43352 KB Output is correct
5 Correct 612 ms 44124 KB Output is correct
6 Correct 639 ms 44672 KB Output is correct

Subtask #5
0 / 19.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1045 ms 47952 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1012 ms 50512 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 39512 KB Output is correct
2 Execution timed out 1059 ms 43644 KB Time limit exceeded
3 Halted 0 ms 0 KB -