제출 #99642

#제출 시각아이디문제언어결과실행 시간메모리
99642Retro3014곤돌라 (IOI14_gondola)C++17
20 / 100
72 ms5244 KiB
#include "gondola.h" #include <bits/stdc++.h> using namespace std; set<int> st; int valid(int n, int inputSeq[]){ int s = -1; for(int i=0; i<n; i++){ if(st.find(inputSeq[i])!=st.end()) return false; st.insert(inputSeq[i]); } for(int i=0; i<n; i++){ if(inputSeq[i]<=n){ s = i; break; } } if(s==-1) return 1; int idx = s, now = inputSeq[idx]; bool tf = true; while(1){ if(inputSeq[idx]<=n && inputSeq[idx]!=now){ tf = false; break; } if(idx==(s+n-2)%n+1) break; now = now%n+1; idx = idx%n+1; } if(tf) return 1; tf = true; idx = s; now = inputSeq[idx]; while(1){ if(inputSeq[idx]<=n &&inputSeq[idx]!=now){ tf = false; break; } if(idx==s%n+1) break; idx = (idx+n-2)%n+1; now = (now+n-2)%n+1; } if(tf) return 1; return 0; } //---------------------- int replacement(int n, int gondolaSeq[], int replacementSeq[]) { return -2; } //---------------------- int countReplacement(int n, int inputSeq[]) { return -3; }
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