Submission #222150

#	Time	Username	Problem	Language	Result	Execution time	Memory
222150		VEGAnn	Wand (COCI19_wand)	C++14	63 / 70	40 ms	5628 KiB

wand

#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define pii pair<int,int>
#define ft first
#define sd second
#define MP make_pair
#define all(x) x.begin(),x.end()
#define PB push_back
using namespace std;
typedef long long ll;
typedef long double ld;
const int N = 100100;
const ll OO = 1e18;
const ld E = 1e-9;
vector<int> g[N];
int n, m;
bool mrk[N];

void dfs(int v){
    if (mrk[v]) return;
    mrk[v] = 1;

    for (int u : g[v])
        dfs(u);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

//    freopen("in.txt","r",stdin);

    cin >> n >> m;
    for (int i = 0; i < m; i++){
        int x, y; cin >> x >> y;
        x--; y--;
        g[y].PB(x);
    }

    for (int u : g[0])
        dfs(u);

    for (int i = 0; i < n; i++)
        cout << mrk[i];

    return 0;
}

• Subtask 1: 63 / 70