Submission #436553

#	Time	Username	Problem	Language	Result	Execution time	Memory
436553		rGamer	Arranging Shoes (IOI19_shoes)	C++17	10 / 100	1090 ms	3116 KiB

shoes

#include <bits/stdc++.h>
#define ll long long
#define vi vector<int>

using namespace std;
 
ll count_swaps(vi s) {
    int n = s.size(), ans = 0;
    for(int i = 0; i < n; ++i) {
        if(i % 2) {
            int j = i;
            while(s[j] != -s[i - 1])
                j++;
            while(j != i) {
                swap(s[j], s[j - 1]);
                ans++;
                j--;
            }
        }
        else if(s[i] > 0) {
            int j1 = i;
            while(s[j1] > 0)
                j1++;
            int j2 = i;
            while(s[j2] != -s[i])
                j2++;
            int j3 = i;
            while(s[j3] != -s[j1])
                j3++;
            int j = ((j2 - i) < (j1 - i + j3 - i)) ? j2 : j1;
            while(j != i) {
                swap(s[j], s[j - 1]);
                ans++;
                j--;
            }
        }
    }
    return ans;
}

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