Submission #143132

#	Time	Username	Problem	Language	Result	Execution time	Memory
143132		mat_v	Arranging Shoes (IOI19_shoes)	C++14	0 / 100	6 ms	4984 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#define pb push_back

using namespace std;

int n;
vector<int> tike[100005][2];
int dokle[100005][2];
long long count_swaps(std::vector<int> s) {
    n = s.size()/2;
    for(int i=0; i<2*n; i++){
        if(s[i] < 0)tike[abs(s[i])][0].pb(i);
        else tike[s[i]][1].pb(i);
    }
    int l = 0;
    int shift = 0;
    long long res = 0;
    while(l < 2*n){
        //cout << l << endl;
        int koji = s[l];
        koji = abs(koji);
        int ind;
        if(s[l] < 0)ind = 1;
        else ind = 0;
        int gde = tike[koji][ind][dokle[koji][ind]];
        gde -= shift;
        res += gde + 1 - ind;
        dokle[koji][ind]++;
        l += 2;
        shift += 1;
    }
	return res;
}

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