Submission #437006

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
437006	2021-06-25 14:59:11	wasa855	Keys (IOI21_keys)	C++17	100 / 100	2195 ms	155372 KiB

keys

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#include "keys.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define Fast_IO ios::sync_with_stdio(false);
#define DEBUG fprintf(stderr,"Running on Line %d in Function %s\n",__LINE__,__FUNCTION__)
mt19937 rnd(20041015);
#define fir first
#define sec second
#define mod 998244353
#define ll long long
#define inf 0x3f3f3f3f
#define INF 0x3f3f3f3f3f3f3f3f
typedef pair<int,int> pii;
void print(vector<int> x){for(int i=0;i<(int)x.size();i++) printf("%d%c",x[i]," \n"[i==(int)x.size()-1]);}
namespace wasa855
{
  #define N 300005
  int fa[N],n;
  set<int> keys[N],G[N];
  set<pii> H[N];
  void att(int u,int v,int col)
  {
    if(u==v) return ;
    if(keys[u].find(col)!=keys[u].end()) G[u].insert(v);
    else H[u].emplace(col,v);
  }
  int find(int u) {return fa[u]==u?u:fa[u]=find(fa[u]);}
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 30 / 30
• Subtask 5: 33 / 33