Submission #435331

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
435331	2021-06-23 08:13:57	jangwonyoung	Fountain Parks (IOI21_parks)	C++17	100 / 100	2982 ms	123008 KiB

parks

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/////////////////////////////
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
#define n nnn
typedef array<int,4> arin;
const int N=2e5+1;
int n;
int cx[N],cy[N];
vector<arin>edges;
vector<int>built[4];
int dx[4]={-2,0,2,0};
int dy[4]={0,-2,0,2};
int ex[4]={-1,1,1,-1};
int ey[4]={-1,-1,1,1};
int p[N];
int find(int x){
    if(p[x]!=x) p[x]=find(p[x]);
    return p[x];
}
bool join(int x,int y){
    x=find(x);y=find(y);
    if(x==y) return false;
    p[x]=y;
    return true;
}
map<pair<int,int>,int>mp,sq;
map<pair<int,int>,bool>used;
map<pair<int,int>,bool>ban;
vector<pair<int,pair<int,int> > >adj[N];
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:94:20: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<int, 4> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   94 |     if(edges.size()!=n-1) return 0;
      |        ~~~~~~~~~~~~^~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30