oj.uz

답안 #895311

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
895311 2023-12-29T18:35:38 Z ilef Regions (IOI09_regions) C++14
4 / 100
 112 ms 131072 KB 
#include<bits/stdc++.h>
#define int long long 
using namespace std;
const int N=2e5+12;
const int R=501;
int H[N];
vector<int>graph[N];
vector<int>v[R];
int id[N];
int sz[R][N];
int trav[R][N];
void dfs(int u,int r2,int p,int &cnt){
    id[u]=cnt;
     sz[r2][u]=1;
    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);
            sz[r2][u]+=sz[r2][v];
        }
    }
}
struct segtree{
    int size;
    vector<vector<int>>sums;
    void init(int n){
        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);
        }
    vector<vector<int>>val(r,vector<int>(R,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);
    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;
        r1--;r2--;
        int summ=0;
        for(auto u:v[r1]){
            int a=id[u];
            int szz=sz[r2][u];
            //cout<<szz<<endl;
            summ+=st.sum(a,a+szz,r2);
        }
        cout<<summ<<endl;
    }
}

Subtask #1
4.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 21080 KB Output is correct
2 Correct 5 ms 29272 KB Output is correct
3 Correct 16 ms 70744 KB Output is correct
4 Correct 23 ms 119564 KB Output is correct
5 Runtime error 21 ms 131072 KB Execution killed with signal 9
6 Runtime error 23 ms 131072 KB Execution killed with signal 9
7 Runtime error 23 ms 131072 KB Execution killed with signal 9
8 Runtime error 24 ms 131072 KB Execution killed with signal 9
9 Runtime error 21 ms 131072 KB Execution killed with signal 9
10 Runtime error 33 ms 131072 KB Execution killed with signal 9
11 Runtime error 39 ms 131072 KB Execution killed with signal 9
12 Runtime error 38 ms 131072 KB Execution killed with signal 9
13 Runtime error 48 ms 131072 KB Execution killed with signal 9
14 Runtime error 61 ms 131072 KB Execution killed with signal 9
15 Runtime error 51 ms 131072 KB Execution killed with signal 9

Subtask #2
0 / 85.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 101 ms 131072 KB Execution killed with signal 9
2 Runtime error 112 ms 131072 KB Execution killed with signal 9
3 Runtime error 98 ms 131072 KB Execution killed with signal 9
4 Runtime error 30 ms 6488 KB Execution killed with signal 11
5 Runtime error 30 ms 6488 KB Execution killed with signal 11
6 Runtime error 30 ms 6488 KB Execution killed with signal 11
7 Runtime error 30 ms 6488 KB Execution killed with signal 11
8 Runtime error 30 ms 6488 KB Execution killed with signal 11
9 Runtime error 30 ms 6488 KB Execution killed with signal 11
10 Runtime error 30 ms 6488 KB Execution killed with signal 11
11 Runtime error 30 ms 6488 KB Execution killed with signal 11
12 Runtime error 30 ms 6588 KB Execution killed with signal 11
13 Runtime error 30 ms 6488 KB Execution killed with signal 11
14 Runtime error 30 ms 6488 KB Execution killed with signal 11
15 Runtime error 30 ms 6740 KB Execution killed with signal 11
16 Runtime error 30 ms 6488 KB Execution killed with signal 11
17 Runtime error 32 ms 6488 KB Execution killed with signal 11