| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1288840 | muhammad-mutahir | Arranging Shoes (IOI19_shoes) | C++20 | 1 ms | 344 KiB |
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
long long count_swaps(vector<int> s) {
long long ans = 0;
int n = s.size();
map<int,int>cnt;
for(int i = 0;i<n;i++){
cnt[abs(s[i])]++;
if(cnt[abs(s[i])]%2 == 0){
// int x = i;
while(i-1>=0 and abs(s[i-1]) != abs(s[i])){
swap(s[i],s[i-1]);
i--;
ans++;
}
if(i-1>=0 and s[i]<s[i-1]){
swap(s[i],s[i-1]);
ans++;
}
}
}
// print(s);
return ans;
}
// int main(){
// cout<<count_swaps({-1,1,-1,1})<<endl;
// }
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