Submission #436531

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
436531	2021-06-24 15:04:53	dacin21	Fountain Parks (IOI21_parks)	C++17	70 / 100	1136 ms	94092 KiB

parks

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#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
const int U = 1.01e5;
struct Segment{
    int x, y;
    bool vert;
};
struct Range{
    int a, b;
};
struct Dsu{
    Dsu(int n_) : p(n_, -1){}
    int f(int x){
        return p[x] < 0 ? x : p[x] = f(p[x]);
    }
    bool u(int a, int b){
        a = f(a);
        b = f(b);
        if(a == b) return false;
        p[b] = a;
        return true;
    }
    vector<int> p;
};
// 2-sat in linear time via backtracking.
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20
• Subtask 6: 0 / 30