Submission #1136027

#	Time	Username	Problem	Language	Result	Execution time	Memory
1136027		Ak_16	Gondola (IOI14_gondola)	C++20	75 / 100	13 ms	2884 KiB

gondola

#include <iostream>
#include <algorithm>
#include "gondola.h"
using namespace std;
#define ll long long
int p = 1e9+9;

ll pow(ll n1, ll n2){
  if(n2==0LL){return 1LL;}
  else if(n2%2==0){return pow(n1*n1%p, n2/2);}
  else {return n1 * pow(n1*n1%p, n2/2) %p;}
}

int b[300005];
int cnt[300005];
int cha[300005];
int brbr[300005];
ll val;
int fin;
int ok;
long long ans;

bool cmp(int x, int y){
  return b[x]<b[y];
}

int valid(int n, int a[]){
  int cn=0;
  
  int bruh=0;
  int sp=0;
  for(int i=0; i<n; i++){
    cnt[a[i]]++; if(cnt[a[i]]>1){bruh=1;}
    if(a[i]<=n){cn++; sp = i;}
    
    
    }
  if(bruh==1){return 0;}
  
  if(cn>0){
   for(int i=0; i<n; i++){
      b[(2*n+a[sp]-sp+i-1)%n] = a[i];
    }
  }
  else {
    for(int i=0; i<n; i++){b[i] = a[i];}
  }
  
  
  if(cn==0){return 1;}
  
  else {
    
    
    
    int bru=0;
    
    for(int i=0; i<n; i++){
      if(b[i]<=n&&b[i]!=i+1){bru=1;}
    }
    
    return (1-bru);
  }
}

int replacement(int n, int a[], int c[]){
  int k = valid(n, a);
  if(k==0){return 0;}
  else {
    int don=0;
    val=0;
    ans=1;
    
    for(int i=0; i<n; i++){
      if(b[i]!=i+1){val++; cha[val] = i; }
    }
    
    fin=val;
    
    sort(cha+1, cha+val+1, cmp);
     ok = n;
    
    for(int i=1; i<=val; i++){
      don++;
      c[don-1] = cha[i]+1;
      for(int j =1; j<= b[cha[i]]-ok-1; j++){
        don++;
        c[don-1] = ok+j;
        ans *= (val-i+1);
        ans %= p;
      }
      ok = b[cha[i]];
    }
    
    return don;
    
  }
}


int countReplacement(int n, int a[]){
  
  int n1 = valid(n, a);
  
  if(n1==0){ return 0;}
  
  else {
    
    val=0;
    ans=1;
    
    for(int i=0; i<n; i++){
      if(b[i]!=i+1){val++; cha[val] = i; }
    }
    
    fin=val;
    
    sort(cha+1, cha+val+1, cmp);
     ok = n;
    
    for(ll i=1; i<=val; i++){
      
      ans *= pow(val-i+1, b[cha[i]]-ok-1);
      ans %= p;
      ok = b[cha[i]];
    }
    
    
    
    
    return ans;
    
  }
}

• 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: 0 / 15
• Subtask 10: 0 / 10