Submission #118081

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
118081	2019-06-18 06:49:00	dragonslayerit	Gondola (IOI14_gondola)	C++14	100 / 100	139 ms	6008 KiB

gondola

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#include "gondola.h"
#include <set>
#include <vector>
#include <algorithm>
#include <cstdio>
const int MOD=1e9+9;
int modpow(int base,int exp){
  int ac=1;
  for(;exp>0;exp>>=1){
    if(exp&1){
      ac=1LL*ac*base%MOD;
    }
    base=1LL*base*base%MOD;
  }
  return ac;
}
int valid(int n, int inputSeq[])
{
  int shift=-1;
  std::set<int> used;
  for(int i=0;i<n;i++){
    if(used.count(inputSeq[i])) return 0;
    used.insert(inputSeq[i]);
    if(inputSeq[i]<=n){
      int new_shift=(inputSeq[i]-i+n)%n;
      if(shift!=-1&&shift!=new_shift) return 0;
      shift=new_shift;
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 5 / 5
• Subtask 8: 15 / 15
• Subtask 9: 15 / 15
• Subtask 10: 10 / 10