Submission #61673

#	Time	Username	Problem	Language	Result	Execution time	Memory
61673		KHUSRAV	Wiring (IOI17_wiring)	C++14	0 / 100	1026 ms	263168 KiB

wiring

#include "wiring.h"
#include<bits/stdc++.h>
using namespace std ;
long long min_total_length(vector<int> r , vector<int> b){

    long long used[100001] , ans = 0 , u1[100001] , u2[100001];
    vector<pair<int , pair<int , int > > > v ;
    for(int i = 0 ; i <= 100000 ; i++)
        u1[i] = u2[i] = 0;

    if(r.size() > b.size())
        swap(r , b);
    for(int i = 0 ; i < r.size() ; i ++){
        for(int j = 0 ; j < b.size() ; j ++){
            v.push_back({abs(r[i] - b[j]) , {i , j}});
            u1[i] ++ ;
            u2[j] ++ ;
            ans = ans + abs(r[i] - b[j]);
        }
    }

    sort(v.begin() , v.end());
    reverse(v.begin() , v.end());

    for(int i = 0 ; i < v.size() ; i++){
        if(u1[v[i].second.first] > 1 && u2[v[i].second.second] > 1){
            ans = ans - v[i].first;
            u1[v[i].second.first] --;
            u2[v[i].second.second] --;
        }
        else{
            //cout << r[v[i].second.first] <<" - "<<b[v[i].second.second] <<'\n';
        }
    }
    return ans ;

}

Compilation message (stderr)

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:13:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0 ; i < r.size() ; i ++){
                     ~~^~~~~~~~~~
wiring.cpp:14:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0 ; j < b.size() ; j ++){
                         ~~^~~~~~~~~~
wiring.cpp:25:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0 ; i < v.size() ; i++){
                     ~~^~~~~~~~~~
wiring.cpp:6:15: warning: unused variable 'used' [-Wunused-variable]
     long long used[100001] , ans = 0 , u1[100001] , u2[100001];
               ^~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 13
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45