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Submission #396829

# Submission time Handle Problem Language Result Execution time Memory
396829 2021-04-30T19:26:34 Z bigg Gondola (IOI14_gondola) C++14
100 / 100
 101 ms 11252 KB 
#include "gondola.h"
#include<bits/stdc++.h> 
using namespace std;

const int MAXN = 1e5 + 10;
map<int, int>  freq;
int nseq[2*MAXN];
typedef long long ll;
const ll MOD = 1e9 + 9;
int valid(int n, int inputSeq[])
{
  //	int ult = 0;
  	for(int i = 0; i < n; i++){
  		nseq[i+1] = nseq[i+n+1] = inputSeq[i];
  		freq[inputSeq[i]]++;
  		if(freq[inputSeq[i]] == 2) return 0;
  	}
  	int ini = 0, auxi = n + 1;
  	for(int i = 1; i <= n; i++){
  		
  		if(nseq[i] <= n && nseq[i] < auxi) ini = i, auxi = nseq[i];
  	//	printf("%d %d\n", nseq[i], auxi);
  	}
 	//printf("\n");
  	//printf("%d\n",ini);
  	if(!ini) return 1;
  	int ult = auxi, ultaux = ini;
  	for(int i = ini+1; i < ini + n; i++){
  		if(nseq[i] <= n){
  	//		printf("%d %d\n", nseq[i], ult );
  			if(nseq[i] <= ult ||nseq[i] - ult != i - ultaux) return 0;
  			ult = nseq[i];
  			ultaux = i;
  		}
  	}
  	return 1;
}

//----------------------
set<pair<int, int> > s;
vector<int> v;
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	for(int i = 0; i < n; i++){
		nseq[i+1] = nseq[i+n+1] = gondolaSeq[i];

		freq[gondolaSeq[i]]++;
 		
	}
	int ini = 0, auxi = n + 1;
	for(int i = 1; i <= n; i++){
	
		if(nseq[i] <= n && nseq[i] < auxi) ini = i, auxi = nseq[i];
		//printf("%d ", nseq[i]);
	}
	ini = (ini - auxi + 1 > 0) ? ini-auxi+1 : n + ini -auxi + 1;
	//printf("\n");
	if(ini == 0) ini = 1, auxi = 1;
	for(int i = ini; i <= ini + n - 1; i++){

		//printf("%d %d\n", i, nseq[i]);
		if(nseq[i] <= n) continue;
		s.insert({nseq[i],i-ini+1});
		//printf("aaan");
	}
	int act = n;
	while(!s.empty()){
		set <pair<int, int> > :: iterator it = s.begin();
		v.push_back(it->second);
		int f = (*s.begin()).first;
		int sec = (*s.begin()).second;
		s.erase({f,sec});
		act++;
		if(f == act) continue;
		s.insert({f,act});

	}
	for(int i = 0; i < v.size(); i++) replacementSeq[i] = v[i];

  	return v.size();
}

ll fexp(ll b, ll e){
	if(e == 0) return 1;
	if(e == 1) return b;
	ll aux = fexp(b, e/2);
	aux*=aux;
	aux%=MOD;
	if(e%2) aux *= b;
	aux %= MOD;
	return aux;
}


//----------------------
//map<int, int> suf;
int countReplacement(int n, int inputSeq[])
{
	if(!valid(n, inputSeq)) return 0;

	for(int i = 1; i <= n; i++){
	
		s.insert({nseq[i],i-1});
		//printf("%d ", nseq[i]);
	}
	
	bool flag = true;
	ll ans = 1;
	ll big = n;
	bool ok = 1;
	int act = n + 1;
	while(!s.empty()){
		pair<int,int> p = *(s.begin());
		if(p.first <= n){
			ok = false;
			big--;
			s.erase(s.begin());
			continue;
		}
		ll aux = p.first - act;
		ans *= fexp(big, aux);
		ans %= MOD;
		act = p.first + 1;
		big--;
		s.erase(s.begin());
	}
	if(ok) ans *= n, ans %= MOD;
	return ans;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:78:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |  for(int i = 0; i < v.size(); i++) replacementSeq[i] = v[i];
      |                 ~~^~~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:107:7: warning: unused variable 'flag' [-Wunused-variable]
  107 |  bool flag = true;
      |       ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 14 ms 2632 KB Output is correct
7 Correct 13 ms 1100 KB Output is correct
8 Correct 36 ms 4812 KB Output is correct
9 Correct 11 ms 1716 KB Output is correct
10 Correct 34 ms 5548 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 21 ms 2648 KB Output is correct
7 Correct 11 ms 1100 KB Output is correct
8 Correct 29 ms 4872 KB Output is correct
9 Correct 9 ms 1776 KB Output is correct
10 Correct 34 ms 5564 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 19 ms 2508 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 46 ms 5828 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 2 ms 408 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 2 ms 332 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 2 ms 308 KB Output is correct
10 Correct 2 ms 332 KB Output is correct
11 Correct 31 ms 5300 KB Output is correct
12 Correct 30 ms 6080 KB Output is correct
13 Correct 40 ms 4996 KB Output is correct
14 Correct 26 ms 5252 KB Output is correct
15 Correct 49 ms 4704 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 220 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 76 ms 8520 KB Output is correct
10 Correct 56 ms 7036 KB Output is correct
11 Correct 19 ms 2764 KB Output is correct
12 Correct 23 ms 3360 KB Output is correct
13 Correct 6 ms 972 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 83 ms 8524 KB Output is correct
10 Correct 56 ms 7116 KB Output is correct
11 Correct 18 ms 2768 KB Output is correct
12 Correct 24 ms 3368 KB Output is correct
13 Correct 5 ms 972 KB Output is correct
14 Correct 82 ms 9840 KB Output is correct
15 Correct 101 ms 11252 KB Output is correct
16 Correct 19 ms 2336 KB Output is correct
17 Correct 61 ms 7620 KB Output is correct
18 Correct 31 ms 4380 KB Output is correct