Submission #1203688

#	Time	Username	Problem	Language	Result	Execution time	Memory
1203688		shadow_sami	Gondola (IOI14_gondola)	C++20	75 / 100	445 ms	2876 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> pi;
#define ff first
#define ss second
#define fip(a,b) for(ll i = a ; i < b; i++)
#define fjp(a,b) for(ll j = a ; j < b; j++)
#define fp(k,a,b) for(ll k = a ; k < b; k++)
#define fin(a,b) for(ll i = a ; i >= b; i---)
#define fjn(a,b) for(ll j = a ; j >= b; j---)
#define fn(k,a,b) for(ll k = a ; k >= b; k---)
#define fx(a) for(auto x:a)
#define ordered_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
#define nli "\n"
#define test ll t;cin>>t;while(t--)
#define srt(a) sort(a.begin(),a.end())
#define all(a) a.begin(),a.end()

void _printn(int a){cerr<<a<<" ";}
void _printn(ll a){cerr<<a<<" ";}
void _printn(bool a){cerr<<a<<" ";}
void _printn(double a){cerr<<a<<" ";}

template<class T> void _printn(vector<T> a);
template<class T,class V> void _printn(pair<T,V> a);
template<class T> void _printn(vector<T> a){
	cerr<<"[  ";
	fx(a){
		_printn(x);cerr<<" ";
	}
	cerr<<"]";
}

template<class T,class V> void _printn(pair<T,V> a){
	cerr<<"( ";
	_printn(a.ff);
	cerr<<",";
	_printn(a.ss);
	cerr<<")";
}


#ifdef SAMI
	#define debug(x) cerr<<#x<<" : ";_printn(x);cerr<<nli;
	#define debg() cerr<<nli;
#else
	#define debug(x)
	#define debg()
#endif

const ll mx = 3e5 + 5;
const ll mod = 1e9 + 9;
bool f = 0;
ll n,m,res,cnt,sum,tp,tp2,tptp,ans;
bool mark[mx];
ll b[mx];
ll rs = 0;
ll mod_power(ll aa,ll bb){
	rs = 1;
	aa %= mod;
	bb %= mod-1;

	while(bb>=1){		
		if(bb&1){
			rs *= aa;
			rs %= mod;
		}		
		bb >>= 1;
		aa *= aa;
		aa %= mod;
	// 	debug(aa);
	// debug(bb);
	// debug(rs);
	// debg();
	}
	return rs;
}

int valid(int n, int inputSeq[]){
	tp = -1;	
	fip(0,n){		
		if(tp!=-1)tp++;		
		if(tp>n)
			tp = 1;
		if(inputSeq[i] <= n){
			if(tp==-1){
				tp = inputSeq[i];				
			}else if(tp!=inputSeq[i])
				return 0;
		}		else{
			if(mark[inputSeq[i]])  return 0;
			mark[inputSeq[i]] = 1;
		}
	}

	return 1;
}

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	ans = 0;
	tp = -1;	
	vector<pi> lis;
	fip(0,n){		
		if(tp!=-1)tp++;		
		if(tp>n)
			tp = 1;
		if(gondolaSeq[i] <= n){
			if(tp==-1){
				tp = gondolaSeq[i];				
			}else if(tp!=gondolaSeq[i])
				return 0;
		}
	}		
	if(tp==-1)tp = 1;
	else{
		tp += 1;
		if(tp > n) tp = 1;
	}	
	fip(0,n){				
		b[i] = tp;
			if(tp!=gondolaSeq[i])
					lis.push_back({gondolaSeq[i],tp});		
			tp++;
			if(tp>n)
				tp = 1;		
	}	
	
	sort(lis.begin(),lis.end(),[](const pi aa,const pi bb){
		return aa.ff > bb.ff;
	});
	debug(lis);
	vi v;
	fip(0,lis.size()){		
		if(i+1<lis.size())
			tp = lis[i+1].ff+1;
		else
			tp = n+1;
		cnt = 0;
		while(lis[i].ff > tp){			
			ans ++;
			v.push_back(lis[i].ff-1);
			lis[i].ff--;
		}
		ans ++;
		v.push_back(lis[i].ss);
	}
		// debug(v);
		reverse(v.begin(),v.end());
		fip(0,ans)	
			replacementSeq[i] = v[i];
		f = 1;
		tp2 = n+1;		
		fx(v){
				fip(0,n){
						if(b[i]==x){
							// debug(x);
							b[i] = tp2;
							tp2++;
							// debug(b[i]);
							break;
						}
				}	
		}
		fip(0,n)
			if(b[i]!=gondolaSeq[i])
				f = 0;
		// fip(0,n)
		// 	cout<<b[i]<<" ";
		// cout<<nli;
  	return ans;
}

//----------------------

int countReplacement(int n, int inputSeq[])
{

	tp = -1;	
	vi v;	
	fip(0,n){		
		if(tp!=-1)tp++;		
		if(tp>n)
			tp = 1;
		if(inputSeq[i] <= n){
			if(tp==-1){
				tp = inputSeq[i];				
			}else if(tp!=inputSeq[i])
				return 0;
		}		else{
			if(mark[inputSeq[i]])  return 0;
			mark[inputSeq[i]] = 1;
			v.push_back(inputSeq[i]);
		}
	}
	srt(v);
	ans = 1;
	res = v.size();
	tp = n;
	// debug(v);
	fx(v){
		tp2 = x - tp - 1;
		// debug(res);
		// debug(tp2);
		ans = ans * mod_power(res,tp2);
		// debug(mod_power(res,tp2));
		ans %= mod;
		tp = x;
		res--;
	}

	return ans;
}

#ifdef SAMI

int gondolaSequence[100001];
int replacementSequence[250001];

int main()
{
	freopen("input1.txt","r",stdin);
	freopen("output1.txt","w",stdout);
	freopen("error1.txt","w",stderr);
  int i, n, tag;
  int nr; 
  assert(scanf("%d", &tag)==1);
  assert(scanf("%d", &n)==1);
  for(i=0;i< n;i++)
    assert( scanf("%d", &gondolaSequence[i]) ==1);
  
  switch (tag){
  case 1: case 2: case 3:
    printf("%d\n", valid(n, gondolaSequence));
    break;

  case 4: case 5: case 6:
    nr = replacement(n, gondolaSequence, replacementSequence);
    printf("%d ", nr);
    if (nr > 0)
      {
	for (i=0; i<nr-1; i++)
	  printf("%d ", replacementSequence[i]);
		printf("%d\n", replacementSequence[nr-1]);
      }  
    else printf("\n");
    break;

  case 7: case 8: case 9: case 10:
    printf("%d\n",  countReplacement(n, gondolaSequence));  
    break;
  }

  return 0;
}

#endif

• 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