Submission #1021084

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1021084	2024-07-12 13:47:48	mdn2002	Fountain Parks (IOI21_parks)	C++17	5 / 100	740 ms	99652 KiB

parks

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/*
Mayoeba Yabureru
*/
#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
static vector<int> _u, _v, _a, _b;
int construct_roads(vector<int> x, vector<int> y) {
    int n = x.size();
    vector<vector<int>> gr(n + 1);
    x.insert(x.begin(), 0);
    y.insert(y.begin(), 0);
    map<pair<int, int>, int> mp;
    map<pair<int, int>, pair<int, int>> mpp;
    for (int i = 1; i <= n; i ++) mp[{x[i], y[i]}] = i;
    vector<int> u, v, a, b;
    map<pair<int, int>, int> taken;
    for (int i = 1; i <= n; i ++) {
        if (mp[{x[i] + 2, y[i]}]) {
            u.push_back(i), v.push_back(mp[{x[i] + 2, y[i]}]);
            gr[i].push_back(mp[{x[i] + 2, y[i]}]);
            gr[mp[{x[i] + 2, y[i]}]].push_back(i);
        }
        if (mp[{x[i], y[i] + 2}]) {
            u.push_back(i), v.push_back(mp[{x[i], y[i] + 2}]);
            gr[i].push_back(mp[{x[i], y[i] + 2}]);
            gr[mp[{x[i], y[i] + 2}]].push_back(i);
 
 
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Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:77:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |     for (int i = 0; i < u.size(); i ++) {
      |                     ~~^~~~~~~~~~

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