oj.uz

답안 #895346

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895346 2023-12-29T19:17:57 Z ilef Regions (IOI09_regions) C++14
5 / 100
 196 ms 131072 KB 
#include<bits/stdc++.h>
#define int long long 
using namespace std;
const int N=2e5+101;
const int R=501;
int H[N];
vector<int>graph[N];
vector<int>v[R];
int id[N];
int sz[N];
int trav[R][N];
void dfs(int u,int r2,int p,int &cnt){
    if(H[u]==r2){
       
        trav[r2][cnt]=1;
    }
    else{
         trav[r2][cnt]=0;
    }
     cnt++;
    for(auto v:graph[u]){
        if(v!=p){
            dfs(v,r2,u,cnt);
        }
    }
}
void dfs1(int u,int p,int &cnt){
    id[u]=cnt;
     sz[u]=1;
     cnt++;
    for(auto v:graph[u]){
        if(v!=p){
            dfs1(v,u,cnt);
            sz[u]+=sz[v];
        }
    }
}
struct segtree{
    int size;
    vector<vector<int>>sums;
    void init(int n,int r){
        size=1;
        while(size<n){
            size*=2;
        }
        sums.assign(r,vector<int>(2*size,0LL));
    }
     void build(vector<vector<int>>&a,int x,int lx,int rx,int r){
        if(rx-lx==1){
            if(lx<(int)a[r].size()){
               sums[r][x]=a[r][lx];
            }
            return ;
        }
        int m=(lx+rx)/2;
        build(a,2*x+1,lx,m,r);
        build(a,2*x+2,m,rx,r);
        sums[r][x]=sums[r][2*x+1]+sums[r][2*x+2];
    }
    void build(vector<vector<int>>&a,int r){
        build(a,0,0,size,r);
    }
    void set(int i,int v,int x,int lx,int rx,int r){
        if(rx-lx==1){
            sums[r][x]=v;
            return ;
        }
        int m=(lx+rx)/2;
        if(i<m){
            set(i,v,2*x+1,lx,m,r);
        }
        else{
            set(i,v,2*x+2,m,rx,r);
        }
        sums[r][x]=sums[r][2*x+1]+sums[r][2*x+2];
    }
     void set(int i,int v,int r){
        set(i,v,0,0,size, r);
    }
    long long sum(int l,int r,int x,int lx,int rx,int rr){
        if(lx>=r || l>=rx){
            return 0;
        }
        if(lx>=l && rx<=r){
            return sums[rr][x];
        }
        int m=(lx+rx)/2;
        return sum(l,r,2*x+1,lx,m,rr)+sum(l,r,2*x+2,m,rx,rr);
    }
    long long sum(int l,int r,int rr){
        return sum(l,r,0,0,size,rr);
    }
};
int32_t main(){
    int n,r,q;
    cin>>n>>r>>q;
    cin>>H[0];
    H[0]--;
    v[H[0]].push_back(0);
    for(int i=1;i<=n-1;i++){
        //cout<<1<<endl;
        int u;
        cin>>u>>H[i];
        H[i]--;
        u--;
        v[H[i]].push_back(i);
        graph[u].push_back(i);
        graph[i].push_back(u);
    }
        for(int j=0;j<r;j++){
            //cout<<1<<endl;
            int  cnt=0;
            dfs(0,j,-1,cnt);
        }
        int cnt=0;
        dfs1(0,-1,cnt);
    vector<vector<int>>val(r,vector<int>(n,0LL));
    for(int i=0;i<n;i++){
        for(int j=0;j<r;j++){
            val[j][i]=trav[j][i];
        }
    }
    segtree st;
    st.init(n,r);
    for(int j=0;j<r;j++){
        //cout<<1<<endl;
    st.build(val,j);}

    while(q--){
        //cout<<1<<endl;
        int r1,r2;
        cin>>r1>>r2;
        cout<<endl;
        r1--;r2--;
        int summ=0;
        for(auto u:v[r1]){
            int a=id[u];
            int szz=sz[u];
            //cout<<szz<<endl;
            summ+=st.sum(a+1,a+szz,r2);
            
        }
        cout<<summ<<endl;
    }
}

Subtask #1
5.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14936 KB Output is correct
2 Correct 3 ms 19032 KB Output is correct
3 Correct 6 ms 39768 KB Output is correct
4 Correct 11 ms 62540 KB Output is correct
5 Correct 14 ms 79348 KB Output is correct
6 Runtime error 29 ms 131072 KB Execution killed with signal 9
7 Runtime error 21 ms 131072 KB Execution killed with signal 9
8 Runtime error 25 ms 131072 KB Execution killed with signal 9
9 Runtime error 23 ms 131072 KB Execution killed with signal 9
10 Runtime error 39 ms 131072 KB Execution killed with signal 9
11 Runtime error 81 ms 131072 KB Execution killed with signal 9
12 Runtime error 97 ms 131072 KB Execution killed with signal 9
13 Runtime error 87 ms 131072 KB Execution killed with signal 9
14 Runtime error 85 ms 131072 KB Execution killed with signal 9
15 Runtime error 58 ms 131072 KB Execution killed with signal 9

Subtask #2
0 / 85.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 142 ms 131072 KB Execution killed with signal 9
2 Runtime error 196 ms 131072 KB Execution killed with signal 9
3 Runtime error 127 ms 131072 KB Execution killed with signal 9
4 Runtime error 18 ms 7000 KB Execution killed with signal 11
5 Runtime error 16 ms 7000 KB Execution killed with signal 11
6 Runtime error 16 ms 7000 KB Execution killed with signal 11
7 Runtime error 21 ms 7000 KB Execution killed with signal 11
8 Runtime error 16 ms 7000 KB Execution killed with signal 11
9 Runtime error 16 ms 7000 KB Execution killed with signal 11
10 Runtime error 16 ms 7000 KB Execution killed with signal 11
11 Runtime error 16 ms 7000 KB Execution killed with signal 11
12 Runtime error 16 ms 7000 KB Execution killed with signal 11
13 Runtime error 17 ms 7000 KB Execution killed with signal 11
14 Runtime error 16 ms 7000 KB Execution killed with signal 11
15 Runtime error 16 ms 7000 KB Execution killed with signal 11
16 Runtime error 16 ms 7000 KB Execution killed with signal 11
17 Runtime error 16 ms 7000 KB Execution killed with signal 11