Submission #547972

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
547972	2022-04-12 05:22:24	Jarif_Rahman	Love Polygon (BOI18_polygon)	C++17	100 / 100	199 ms	30036 KiB

polygon

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#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;
int n;
vector<vector<int>> v;
vector<int> succ;
vector<bool> bl;
pair<int, int> cycle;
bool cycle_type;
void dfs_cycle(int nd, int ss){
    if(bl[nd]){
        cycle = {ss, nd};
        return;
    }
    bl[nd] = 1;
    unordered_map<int, int> mp;
    for(int x: v[nd]) if(x != ss) dfs_cycle(x, nd), mp[x]++;
    for(auto [x, c]: mp) if(c > 1){
        cycle = {nd, x};
        if(nd != x) cycle_type = 1;
    }
}
 
 
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• Subtask 1: 21 / 21
• Subtask 2: 25 / 25
• Subtask 3: 29 / 29
• Subtask 4: 25 / 25