Submission #970293

#	Time	Username	Problem	Language	Result	Execution time	Memory
970293		mychecksedad	Fountain Parks (IOI21_parks)	C++17	5 / 100	100 ms	18104 KiB

parks

#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n';
#define ll long long int
const int N = 3e5+10;


int construct_roads(std::vector<int> x, std::vector<int> y) {
    if (x.size() == 1) {
    build({}, {}, {}, {});
        return 1;
    }
    int n = x.size();
    vector<int> u, v, a, b;


    vector<pair<int, int>> F;
    for(int i = 0; i < n; ++i) F.pb({y[i], i}); 
    sort(all(F));
    for(int i = 0; i < n - 1; ++i){
        if(F[i + 1].first - F[i].first > 2){
            return 0;
        }
        u.pb(F[i].second);
        v.pb(F[i + 1].second);
        a.pb(1);
        b.pb(F[i].first+F[i+1].first>>1);
    }



    build(u, v, a, b);
    return 1;
}

Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:30:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |         b.pb(F[i].first+F[i+1].first>>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