Submission #440407

#	Time	Username	Problem	Language	Result	Execution time	Memory
440407		antontsiorvas	Fountain Parks (IOI21_parks)	C++17	5 / 100	81 ms	7480 KiB

parks

#include "parks.h"

#include <cstdio>
#include <algorithm>

int fount[200005];
int sy[200005];

bool compare(int a, int b){	return sy[a] < sy[b];	}

int construct_roads(std::vector<int> x, std::vector<int> y) {
    if (x.size() == 1) {
		build({}, {}, {}, {});
        return 1;
    }
    int n = x.size();
    for(int i=0; i<n; i++){
    	fount[i] = i;
    	sy[i] = y[i];
	}
    std::sort(&fount[0],&fount[n],compare);
    std::sort(&sy[0],&sy[n]);
    std::vector<int> u, v, a, b;
    for(int i=0; i<n-1; i++){
    	if(sy[i+1]-sy[i] != 2) return 0;
    	u.push_back(fount[i]);
    	v.push_back(fount[i+1]);
    	a.push_back(1);
    	b.push_back(sy[i]+1);
	}
	
    build(u, v, a, b);
    return 1;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30