Submission #34958

#	Time	Username	Problem	Language	Result	Execution time	Memory
34958		wan2000	스파이 (JOI13_spy)	C++14	100 / 100	336 ms	246836 KiB

spy

#include <bits/stdc++.h>

using namespace std;

template<typename T> inline void read(T &x){
    x = 0; char ch;
    while(!isdigit(ch=getchar()));
    do{x=10*x+ch-'0';}while(isdigit(ch=getchar()));
}

template<typename T> inline void write(T x){
    if(x<=9){
        putchar(x+'0');
        return;
    }
    write(x/10);
    putchar(x%10+'0');
}

template<typename T> inline void writeln(T x){
    write(x); putchar('\n');
}

const int N = 2001;
const int M = 5e5+1;

int n, m;
bitset<M> D[2][N], cur;
vector<int> Adj[2][N];

void DFS(int u, int tp){
    for(int i = 0; i < (int)Adj[tp][u].size(); i++){
        int v = Adj[tp][u][i];
        D[tp][v] |= D[tp][u];
        DFS(v,tp);
    }
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    read(n); read(m);
    for(int i = 1; i <= n; i++){
        int x, y;
        read(x); read(y);
        Adj[0][x].push_back(i);
        Adj[1][y].push_back(i);
    }
    for(int i = 0; i < m; i++){
        int x, y;
        read(x); read(y);
        D[0][x].set(i);
        D[1][y].set(i);
    }
    DFS(0,0);
    DFS(0,1);
    for(int i = 1; i <= n; i++){
        cur = D[0][i]&D[1][i];
        writeln(cur.count());
    }
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 70 / 70