제출 #836169

#제출 시각아이디문제언어결과실행 시간메모리
836169DenkataArranging Shoes (IOI19_shoes)C++14
10 / 100
3 ms5072 KiB
#include<bits/stdc++.h> #include "shoes.h" //#include "grader.cpp" using namespace std; const int maxn = 1e5+3; long long i,j,ans,p; vector <int> pos[maxn*2]; long long count_swaps(vector<int> s) { ans = 0; j = 1; for(auto i:s) { if(pos[-i+maxn].empty()) pos[i+maxn].push_back(j); else { p = pos[-i+maxn].back(); pos[-i+maxn].pop_back(); ans+=j-p-1; if(i<0) ans++; } j++; } return ans; }
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