Submission #1263877

#TimeUsernameProblemLanguageResultExecution timeMemory
1263877piolkArranging Shoes (IOI19_shoes)C++20
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; vector<int> tree; int len=0; void update(int v,int currStart,int currEnd,int lookStart,int lookEnd){ if (currStart>=lookStart && currEnd<=lookEnd){ tree[v]++; return; } if (currStart>lookEnd || currEnd<lookStart) return; int mid=(currStart+currEnd)/2; update(2*v,currStart,mid,lookStart,lookEnd); update(2*v+1,mid+1,currEnd,lookStart,lookEnd); } int get(int pos){ pos+=len; int ans=tree[pos]; while (pos>1){ pos/=2; ans+=tree[pos]; } return ans; } int64_t count_swaps(vector<int> S){ tree.clear(); int n=S.size(); for (int i=1;i<=21;i++){ int p=(1<<i); if (p>=n){ len=p; break; } } tree.resize(2*len); vector<bool> skip(n); iota(tree.begin()+len+1,tree.end(),1); vector<pair<queue<int,vector<int>>,queue<int,vector<int>>>> pqs(n+1); for (int i=0;i<n;i++){ if (S[i]>0){ pqs[S[i]].first.push(i); } else { pqs[S[i]*-1].second.push(i); } } int64_t swaps=0; for (int i=0;i<n;i++){ if (skip[i]) continue; int now=get(i); int next; if (S[i]>0){ //szukam w ujemnych na .second next=pqs[S[i]].second.front(); pqs[S[i]].second.pop(); pqs[S[i]].first.pop(); //usuwamy now } else { //szukam w dodatnich na .first next=pqs[S[i]*-1].first.front(); pqs[S[i]*-1].first.pop(); pqs[S[i]*-1].second.pop();//usuwamy now } update(1,0,len-1,0,next-1); skip[i]=true; skip[next]=true; next=get(next); swaps+=next-now-1; if (S[i]>0) swaps++; } return swaps; }

Compilation message (stderr)

In file included from /usr/include/c++/11/queue:64,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:86,
                 from shoes.cpp:1:
/usr/include/c++/11/bits/stl_queue.h: In instantiation of 'void std::queue<_Tp, _Sequence>::pop() [with _Tp = int; _Sequence = std::vector<int>]':
shoes.cpp:68:33:   required from here
/usr/include/c++/11/bits/stl_queue.h:301:11: error: 'class std::vector<int>' has no member named 'pop_front'
  301 |         c.pop_front();
      |         ~~^~~~~~~~~