Submission #1061214

#TimeUsernameProblemLanguageResultExecution timeMemory
1061214ttamxMonster Game (JOI21_monster)C++17
0 / 100
62 ms600 KiB
#include "monster.h" #include <bits/stdc++.h> using namespace std; vector<int> Solve(int n){ vector<int> a(n),b(n); function<void(int,int)> msort=[&](int l,int r){ if(l==r)return; int m=(l+r)/2; msort(l,m); msort(m+1,r); for(int i=l,j=m+1,p=l;p<=r;p++){ if(j>r||(i<=m&&!Query(a[i],a[j]))){ b[p]=a[i++]; }else{ b[p]=a[j++]; } } for(int i=l;i<=r;i++)a[i]=b[i]; }; iota(a.begin(),a.end(),0); msort(0,n-1); int st=-1; if(Query(a[1],a[0])){ st=1; for(int i=2;i<n;i++){ if(Query(a[1],a[i])){ st=-1; break; } } } if(st==-1){ st=2; while(Query(a[st],a[st-1])||Query(a[st-2],a[st])){ st++; assert(st<n); } } reverse(a.begin(),a.begin()+st+1); for(int i=st+1;i<n;i++){ int j=i; while(!Query(a[i-1],a[j])){ j++; assert(j<n); } reverse(a.begin()+i,a.begin()+j+1); i=j; } vector<int> ans(n); for(int i=0;i<n;i++)ans[a[i]]=i; return ans; }
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