Submission #435711

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
435711	2021-06-23 15:30:38	Mazaalai	Fountain Parks (IOI21_parks)	C++17	100 / 100	618 ms	55572 KiB

parks

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#include <bits/stdc++.h>
#include "parks.h"
using namespace std;
// vector <int> a1, b1, c1, d1;
// void build(vector <int> a, vector <int> b, vector <int> c, vector <int> d) {
//     a1 = a;
//     b1 = b;
//     c1 = c;
//     d1 = d;
// }
const int N = 2e5 + 5;
int n;
vector <vector <int> > pos;
vector <int> a2, b2, c2, d2, par(N);
map <pair <int, int> , int> fIdx;
set <pair <int, int> > used;
int find(int a) {
    if (par[a] == a) return a;
    return par[a] = find(par[a]);   
}
int merged = 0;
bool merge(int a, int b) {
    a = find(a), b = find(b);
    if (a == b) return 0;
    par[b] = a;
    merged++;
    return 1;
}
void connect(pair <int, int> pt, int i, int j) {
 
 
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Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:65:9: warning: unused variable 'source' [-Wunused-variable]
   65 |     int source = find(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