Submission #1334699

#	Time	Username	Problem	Language	Result	Execution time	Memory
1334699		yc11	Arranging Shoes (IOI19_shoes)	C++20	50 / 100	1096 ms	2728 KiB

shoes

#include<bits/stdc++.h>
using namespace std;
int64_t count_swaps(vector<int> S){
    vector<int> n1;
    n1.assign(S.size(),0);
    int ans = 0;
    for (int i = 0;i<S.size();i++){
        if (n1[i]==1 or n1[i]==-1) continue;
        for (int j = i+1;j<S.size();j++){
            if (S[j]==S[i]*-1 and n1[j]==0){
                n1[j] = -1;
                n1[i] = 1;
                if (S[i]>0) ans++;
                for (int k = j-1;k>i;k--){
               
                    if (n1[k]==0) ans++;
                   
                }
                break;
            }
        }
 
    }
    return ans;
}

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