Submission #143344

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
143344	2019-08-13 17:32:04	pzdba	Arranging Shoes (IOI19_shoes)	C++14	100 / 100	108 ms	15352 KiB

shoes

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#include <bits/stdc++.h>
using namespace std;
vector<int> s[200001];
int j[200001];
bool vis[200001];
int p[200001];
int ft[200001];
void update(int i, int v){
    for(;i<=200000;i+=(i&-i)) ft[i] += v;
}
int query(int i){
    int ans = 0;
    for(;i>0;i-=(i&-i)) ans+=ft[i];
    return ans;
}
long long count_swaps(vector<int> S){
    int n = S.size()/2;
    for(int i=0;i<n+n;i++){
        if(S[i] < 0) S[i] = -S[i];
        else S[i] += n;
        s[S[i]].push_back(i);
        p[i] = -1;
    }
    for(int i=0;i<n+n;i++){
        if(vis[i]) continue;
        vis[i] = 1;
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 15 / 15