Submission #473962

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
473962	2021-09-16 12:56:58	model_code	Newspapers (CEOI21_newspapers)	C++17	100 / 100	254 ms	8228 KiB

newspapers

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#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define REP(i, n) FOR(i, 0, n)
#define ll long long
using namespace std;
const int MAXN = 1010;
vector <int> ve[MAXN];
int bio[MAXN];
void impossible() {
    cout << "NO\n";
    exit(0);
}
void dfs(int x, int par) {
    bio[x] = bio[par] + 1;
    for (int y : ve[x]) {
        if (y == par) continue;
        if (bio[y]) impossible();
        dfs(y, x);
    }
    return;
}
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 8 / 8
• Subtask 3: 80 / 80