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Submission #980955

# Submission time Handle Problem Language Result Execution time Memory
980955 2024-05-12T16:20:01 Z SmuggingSpun Gondola (IOI14_gondola) C++14
60 / 100
 21 ms 2832 KB 
#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;
int valid(int n, int inputSeq[]){
	vector<pair<int, int>>p;
	map<int, bool>cnt;
	for(int i = 0; i < n; i++){
		if(inputSeq[i] <= n){
			p.emplace_back(inputSeq[i], i);
		}
		else if(cnt[inputSeq[i]]){
			return 0;
		}
		else{
			cnt[inputSeq[i]] = true;
		}
	}	
	sort(p.begin(), p.end());
	for(int i = 1; i < p.size(); i++){
		if((p[i].second < p[i - 1].second && (p[i].second += n) < p[i - 1].second) || (p[i].second - p[i - 1].second != p[i].first - p[i - 1].first)){
			return 0;
		}
	}
	return 1;
}
int replacement(int n, int gondolaSeq[], int replacementSeq[]){
	if(valid(n, gondolaSeq) == 0){
		return 0;
	}
	int index = min_element(gondolaSeq, gondolaSeq + n) - gondolaSeq, L = 0;
	if(gondolaSeq[index] > n){
		vector<int>p(n), init(n);
		iota(p.begin(), p.end(), 0);
		iota(init.begin(), init.end(), 1);
		sort(p.begin(), p.end(), [&] (int i, int j) -> bool{
			return gondolaSeq[i] < gondolaSeq[j];
		});
		int current = n;
		for(int& i : p){
			while(gondolaSeq[i] > init[i]){
				replacementSeq[L++] = init[i];
				init[i] = ++current;
			}
		}
	}
	else{
		vector<int>init(n);
		for(int i = 0; i < n; i++){
			init[(i + index) % n] = (gondolaSeq[index] - 1 + i) % n + 1;
		}
		vector<int>p;
		for(int i = 0; i < n; i++){
			if(gondolaSeq[i] > n){
				p.emplace_back(i);
			}
		}
		sort(p.begin(), p.end(), [&] (int i, int j) -> bool{
			return gondolaSeq[i] < gondolaSeq[j];
		});
		int current = n;
		for(int& i : p){
			while(gondolaSeq[i] > init[i]){
				replacementSeq[L++] = init[i];
				init[i] = ++current;
			}
		}
	}
	return L;
}
const int mod = 1e9 + 7;
int power(int a, int b){
	int ans = 1;
	for(; b > 0; b >>= 1, a = 1LL * a * a % mod){
		if(b & 1){
			ans = 1LL * ans * a % mod;
		}
	}
	return ans;
}
int countReplacement(int n, int inputSeq[]){
	if(valid(n, inputSeq) == 0){
		return 0;
	}
	vector<int>p;
	for(int i = 0; i < n; i++){
		if(inputSeq[i] > n){
			p.emplace_back(i);
		}
	}
	sort(p.begin(), p.end(), [&] (int i, int j) -> bool{
		return inputSeq[i] < inputSeq[j];
	});
	int ans = 1;
	for(int i = 0, pre = n; i < p.size(); pre = inputSeq[p[i++]]){
		ans = 1LL * ans * power(int(p.size()) - i, inputSeq[p[i]] - pre - 1) % mod;
	}
	if(p.size() == n){
		ans = 1LL * ans * n % mod;
	}	
	return ans;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:19:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for(int i = 1; i < p.size(); i++){
      |                 ~~^~~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:94:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   94 |  for(int i = 0, pre = n; i < p.size(); pre = inputSeq[p[i++]]){
      |                          ~~^~~~~~~~~~
gondola.cpp:97:14: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   97 |  if(p.size() == n){
      |     ~~~~~~~~~^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 504 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 9 ms 1240 KB Output is correct
7 Correct 19 ms 1744 KB Output is correct
8 Correct 9 ms 1748 KB Output is correct
9 Correct 4 ms 860 KB Output is correct
10 Correct 12 ms 1744 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1084 KB Output is correct
7 Correct 13 ms 1776 KB Output is correct
8 Correct 8 ms 1748 KB Output is correct
9 Correct 4 ms 860 KB Output is correct
10 Correct 12 ms 1900 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 14 ms 2084 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 17 ms 2260 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 9 ms 1748 KB Output is correct
12 Correct 11 ms 1788 KB Output is correct
13 Correct 21 ms 2652 KB Output is correct
14 Correct 9 ms 1748 KB Output is correct
15 Correct 20 ms 2832 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 360 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Incorrect 0 ms 344 KB Output isn't correct
8 Halted 0 ms 0 KB -