oj.uz

Submission #941397

# Submission time Handle Problem Language Result Execution time Memory
941397 2024-03-08T17:38:37 Z Darren0724 File Paths (BOI15_fil) C++17
100 / 100
 102 ms 33108 KB 
#include <bits/stdc++.h>
using namespace std;
#define LCBorz ios_base::sync_with_stdio(false); cin.tie(0);
#define all(x) x.begin(), x.end()
#define endl '\n'
const int N=6005;
const int M=1000005;
const int INF=1e9;
int n,m,l,p;
vector<int> v(N),adj[N],ans(N),t(M,0),t1(M,0);
void dfs(int k,int pa){
    for(int j:adj[k]){
        if(j==pa)continue;
        v[j]+=v[k];
        dfs(j,k);
    }
}
vector<int> h,h1;
vector<int> rec[N];
void dfs1(int k,int pa){
    for(int j:h){
        if(l-(v[k]-j)>=0&&t[l-(v[k]-j)]==1){
            ans[k]=1;
        }
    }
    h.push_back(v[k]);
    for(int j:adj[k]){
        if(j==pa)continue;
        dfs1(j,k);
    }
    h.pop_back();
}
void dfs2(int k,int rt){
    if(k<=n)rec[rt].push_back(v[k]-v[rt]+p);
    for(int j:adj[k]){
        dfs2(j,rt);
    }
}
void dfs3(int k,int pa){
    for(int j:rec[k]){
        t1[j]++;
    }
    int tmp=l-v[k];
    for(int i=1;i*i<=tmp;i++){
        if(tmp%i==0){
            int a=tmp/i;
            if(t1[i]||t1[a]){
                ans[k]=1;
            }
        }
    }
    for(int j:adj[k]){
        if(j==pa)continue;
        dfs3(j,k);
    }
    for(int j:rec[k]){
        t1[j]--;
    }
}
int32_t main() {
    LCBorz;
    cin>>n>>m>>l>>p;
    p++;
    for(int i=1;i<=n+m;i++){
        int a,b;cin>>a>>b;
        v[i]=b+1;
        adj[a].push_back(i);
    }
    dfs(0,0);
    for(int i=0;i<=n;i++){
        if(v[i]+p<M&&v[i]+p>=0)t[v[i]+p]=1;
    }
    for(int i=n+1;i<=n+m;i++){
        ans[i]|=(v[i]==l);
    }
    dfs1(0,0);
    for(int i=0;i<=n+m;i++){
        dfs2(i,i);
    }
    dfs3(0,0);
    for(int i=n+1;i<=n+m;i++){
        cout<<(ans[i]?"YES":"NO")<<endl;
    }
 
    return 0;
}

Subtask #1
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8536 KB Output is correct
2 Correct 3 ms 8536 KB Output is correct
3 Correct 6 ms 8540 KB Output is correct
4 Correct 5 ms 8796 KB Output is correct
5 Correct 8 ms 8540 KB Output is correct
6 Correct 8 ms 8540 KB Output is correct
7 Correct 8 ms 9304 KB Output is correct
8 Correct 6 ms 8540 KB Output is correct
9 Correct 5 ms 8540 KB Output is correct
10 Correct 3 ms 8536 KB Output is correct
11 Correct 6 ms 8792 KB Output is correct
12 Correct 6 ms 9052 KB Output is correct

Subtask #2
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 8792 KB Output is correct
2 Correct 18 ms 8796 KB Output is correct
3 Correct 19 ms 8888 KB Output is correct
4 Correct 20 ms 8796 KB Output is correct
5 Correct 98 ms 28244 KB Output is correct
6 Correct 95 ms 27988 KB Output is correct
7 Correct 70 ms 19548 KB Output is correct
8 Correct 73 ms 19520 KB Output is correct
9 Correct 19 ms 8792 KB Output is correct
10 Correct 16 ms 8792 KB Output is correct
11 Correct 23 ms 9304 KB Output is correct
12 Correct 84 ms 28076 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8536 KB Output is correct
2 Correct 3 ms 8536 KB Output is correct
3 Correct 6 ms 8540 KB Output is correct
4 Correct 5 ms 8796 KB Output is correct
5 Correct 8 ms 8540 KB Output is correct
6 Correct 8 ms 8540 KB Output is correct
7 Correct 8 ms 9304 KB Output is correct
8 Correct 6 ms 8540 KB Output is correct
9 Correct 5 ms 8540 KB Output is correct
10 Correct 3 ms 8536 KB Output is correct
11 Correct 6 ms 8792 KB Output is correct
12 Correct 6 ms 9052 KB Output is correct
13 Correct 18 ms 8792 KB Output is correct
14 Correct 18 ms 8796 KB Output is correct
15 Correct 19 ms 8888 KB Output is correct
16 Correct 20 ms 8796 KB Output is correct
17 Correct 98 ms 28244 KB Output is correct
18 Correct 95 ms 27988 KB Output is correct
19 Correct 70 ms 19548 KB Output is correct
20 Correct 73 ms 19520 KB Output is correct
21 Correct 19 ms 8792 KB Output is correct
22 Correct 16 ms 8792 KB Output is correct
23 Correct 23 ms 9304 KB Output is correct
24 Correct 84 ms 28076 KB Output is correct
25 Correct 18 ms 8792 KB Output is correct
26 Correct 17 ms 8792 KB Output is correct
27 Correct 17 ms 8796 KB Output is correct
28 Correct 18 ms 8796 KB Output is correct
29 Correct 94 ms 27948 KB Output is correct
30 Correct 99 ms 28240 KB Output is correct
31 Correct 74 ms 19544 KB Output is correct
32 Correct 70 ms 19408 KB Output is correct
33 Correct 16 ms 8796 KB Output is correct
34 Correct 14 ms 8796 KB Output is correct
35 Correct 25 ms 9556 KB Output is correct
36 Correct 102 ms 33108 KB Output is correct