Submission #242902

#TimeUsernameProblemLanguageResultExecution timeMemory
242902uacoder123Arranging Shoes (IOI19_shoes)C++14
100 / 100
588 ms32416 KiB
#include <bits/stdc++.h> #include "shoes.h" using namespace std; #define F first #define FOR(i,a,b) for (auto i = (a); i <= (b); ++i) #define NFOR(i,a,b) for(auto i = (a); i >= (b); --i) #define all(x) (x).begin(), (x).end() #define sz(x) lli(x.size()) #define mp(i,a) make_pair(i,a) #define pb(a) push_back(a) #define bit(x,b) (x&(1LL<<b)) typedef long long int lli; typedef pair <lli,lli> ii; typedef pair <lli,ii> iii; typedef vector <lli> vi; lli segt[8*100000]={}; void up(lli node,lli l,lli r,lli in) { if(l==r) { segt[node]=1; return; } lli m=(l+r)/2; if(in<=m) up(2*node+1,l,m,in); else up(2*node+2,m+1,r,in); segt[node]=segt[2*node+1]+segt[2*node+2]; } lli qu(lli node,lli l,lli r,lli s,lli e) { if(l>=s&&r<=e) return(segt[node]); if(l>e||r<s) return(0); lli m=(l+r)/2; lli q1=qu(2*node+1,l,m,s,e),q2=qu(2*node+2,m+1,r,s,e); return(q1+q2); } long long count_swaps(std::vector<int> s) { lli n=s.size(),f; lli ans=0; set<ii>inva,vain; for(lli i=0;i<n;++i) { f=s[i]; if(f<0) f=abs(f)+n/2; inva.insert(mp(i,f)); vain.insert(mp(f,i)); } while(inva.size()) { ii it,f=(*inva.begin()); inva.erase(inva.begin()); vain.erase(mp(f.second,f.F)); f.F+=qu(0,0,n-1,f.F,n-1); if(f.second>n/2) it=(*vain.lower_bound(mp(f.second-n/2,0))); else it=(*vain.lower_bound(mp(f.second+n/2,0))); vain.erase(it); inva.erase(mp(it.second,it.F)); up(0,0,n-1,it.second); it.second+=qu(0,0,n-1,it.second,n-1)-1; ans+=it.second-f.F-1; if(f.second<=n/2) ans++; } return(ans); }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...