Submission #1172267

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1172267	2025-03-23 06:29:11	gyg	Fountain Parks (IOI21_parks)	C++20	0 / 100	3598 ms	76568 KiB

parks

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#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
#define arr array 
#define vec vector
#define pii pair<int, int>
#define fir first 
#define sec second
const int N = 2e5 + 5, INF = 1e9;
int n;
arr<pii, N> ps;
map<pii, int> id;
vec<pii> edg;
void edg_cmp() {
    for (int u = 1; u <= n; u++) {
        vec<pii> dlt = {{-2, 0}, {2, 0}, {0, -2}, {0, 2}};
        for (pii x : dlt) {
            int a = ps[u].fir + x.fir, b = ps[u].sec + x.sec;
            if (!id[{a, b}]) continue;
            edg.push_back({u, id[{a, b}]});
        }
    }
}
struct Dsj {
    arr<int, N> prnt, sz;
    void intl() {
        for (int u = 1; u <= n; u++)
 
 
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