제출 #599510

#제출 시각아이디문제언어결과실행 시간메모리
599510Bench0310곤돌라 (IOI14_gondola)C++17
100 / 100
56 ms6516 KiB
#include <bits/stdc++.h> #include "gondola.h" using namespace std; typedef long long ll; int valid(int n,int inputSeq[]) { vector<int> v(n); for(int i=0;i<n;i++) v[i]=inputSeq[i]; for(int i=0;i<n;i++) { if(v[i]<=n) { int one=(i-(v[i]-1)+n)%n; rotate(v.begin(),v.begin()+one,v.end()); break; } } set<int> s; for(int i=0;i<n;i++) { if(s.find(v[i])!=s.end()) return 0; s.insert(v[i]); if(v[i]<=n&&v[i]!=i+1) return 0; } return 1; } int replacement(int n,int gondolaSeq[],int replacementSeq[]) { vector<int> v(n); for(int i=0;i<n;i++) v[i]=gondolaSeq[i]; for(int i=0;i<n;i++) { if(v[i]<=n) { int one=(i-(v[i]-1)+n)%n; rotate(v.begin(),v.begin()+one,v.end()); break; } } vector<int> trains[n]; for(int i=0;i<n;i++) trains[i].push_back(i+1); int mx=0; for(int i=1;i<n;i++) if(v[i]>v[mx]) mx=i; vector<int> vis(v[mx]+1,0); for(int i=0;i<n;i++) vis[v[i]]=1; for(int i=n+1;i<=v[mx];i++) if(vis[i]==0) trains[mx].push_back(i); for(int i=0;i<n;i++) trains[i].push_back(v[i]); vector<int> res(v[mx]+1,0); for(int i=0;i<n;i++) for(int j=1;j<(int)trains[i].size();j++) res[trains[i][j]]=trains[i][j-1]; for(int i=n+1;i<=v[mx];i++) replacementSeq[i-n-1]=res[i]; return v[mx]-n; } int countReplacement(int n,int inputSeq[]) { if(valid(n,inputSeq)==0) return 0; const ll mod=1000000009; auto mul=[&](ll a,ll b)->ll{return (a*b)%mod;}; auto fpow=[&](ll b,ll e)->ll { ll r=1; while(e) { if(e&1) r=mul(r,b); b=mul(b,b); e/=2; } return r; }; vector<int> v={n}; for(int i=0;i<n;i++) if(inputSeq[i]>=n+1) v.push_back(inputSeq[i]); sort(v.begin(),v.end()); int sz=v.size(); ll res=(sz<=n?1:n); for(int i=1;i<sz;i++) res=mul(res,fpow(sz-i,v[i]-v[i-1]-1)); return int(res); }
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