Submission #794382

#	Time	Username	Problem	Language	Result	Execution time	Memory
794382		YassirSalama	Gondola (IOI14_gondola)	C++14	20 / 100	40 ms	8696 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;
#define OVL(v,s) for(auto x:v) cout<<x<<s;cout<<endl;
#define dbg(x) cout << "[ " << #x << " ] : " << x<<endl;
#define F first
#define S second
const int INF=1e6;
vector<int> get_sequence(int n,vector<int> v){
	for(int i=0;i<n-1;i++){
		if(v[i]>v[i+1]){
			if(v[i]>n&&v[i+1]<=n){
				v[i]=(v[i+1]-2+n)%n+1;
				continue;
			}
		}
		if(v[i]<v[i+1]&&v[i+1]>n&&v[i]<=n){
			v[i+1]=v[i]%n+1;
		}
	}
	for(int i=n-2;i>=0;i--){
		if(v[i]>v[i+1]){
			if(v[i]>n&&v[i+1]<=n){
				v[i]=(v[i+1]-2+n)%n+1;
				continue;
			}
		}
		if(v[i]<v[i+1]&&v[i+1]>n&&v[i]<=n){
			v[i+1]=v[i]%n+1;
		}
	}
	for(int i=0;i<n-1;i++){
		if(v[i]>v[i+1]){
			if(v[i]>n&&v[i+1]<=n){
				v[i]=(v[i+1]-2+n)%n;
				continue;
			}
		}
		if(v[i]<v[i+1]&&v[i+1]>n&&v[i]<=n){
			v[i+1]=v[i]%n+1;
		}
	}
	for(int i=0;i<n-1;i++){
		if(v[i]>v[i+1]){
			if(v[i]>n&&v[i+1]<=n){
				v[i]=(v[i+1]-2+n)%n;
				continue;
			}
		}
	}
	return v;
}
int valid(int n,int arr[]){
	vector<int> v;
	for(int i=0;i<n;i++) v.push_back(arr[i]);
	set<int> s;
	set<int> ss;
	for(int i=0;i<n;i++) ss.insert(arr[i]);
	for(int i=0;i<n-1;i++){
		if(v[i]>v[i+1]){
			if(v[i]>n&&v[i+1]<=n){
				v[i]=(v[i+1]-2+n)%n;
				continue;
			}
		}
		if(v[i]<v[i+1]&&v[i+1]>n){
			v[i+1]=v[i]%n+1;
		}
	}
	for(int i=0;i<n-1;i++){
		if(v[i]>v[i+1]){
			if(v[i]>n&&v[i+1]<=n){
				v[i]=(v[i+1]-2+n)%n;
				continue;
			}
		}
		if(v[i]<v[i+1]&&v[i+1]>n){
			v[i+1]=v[i]%n+1;
		}
	}
	for(int i=0;i<n-1;i++){
		if(v[i]>v[i+1]){
			if(v[i]>n&&v[i+1]<=n){
				v[i]=(v[i+1]-1+n)%n;
				continue;
			}
		}
		if(v[i]<v[i+1]&&v[i+1]>n){
			v[i+1]=v[i]%n+1;
		}
	}
	int index=0;
	for(int i=0;i<n-1;i++){
		if(v[i]<=v[i+1]) index=i+1;
		else{
			index=i+1;
			break;
		}
	}
	bool ok=true;
	for(int i=index;i<n-1;i++){
		// cout<<v[i]<<" "<<v[i+1]<<endl;
		ok&=(v[i]<=v[i+1]);
	}
	for(int i=0;i<index-1;i++){
		// cout<<v[i]<<" "<<v[i+1]<<endl;
		ok&=v[i]<=v[i+1];
	}
	for(int i=0;i<n;i++) s.insert(v[i]);
	ok&=(s.size()==n&&ss.size()==n);
	// OVL(v," ")
	// dbg(index);
	return ok;
}
int countReplacement(int n, int inputSeq[]){return 0;}
int replacement(int n, int arr[], int replacementSeq[]){
	vector<int> v;
	for(int i=0;i<n;i++) v.push_back(arr[i]);
	vector<int> vv=get_sequence(n,v);
	set<pair<int,int>> s;
	for(int i=0;i<n;i++){
		if(v[i]>n) s.insert({v[i],i}); 
	}
	vector<int> c;
	int start=n+1;
	for(auto it=s.begin();it!=s.end();it++){
		int f=0;
		while(start<=(*it).F) {
			if(f==0) c.push_back(vv[(*it).S]);
			else{ 
				c.push_back(start);
				start++;
			}
			if(start==(*it).F) break;
			f++;
		}
		start++;
	}
	OVL(vv," ")
	for(int i=0;i<c.size();i++) replacementSeq[i]=c[i];
	return c.size();
}


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

// int main() {
//   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;
// }

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:110:15: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  110 |  ok&=(s.size()==n&&ss.size()==n);
      |       ~~~~~~~~^~~
gondola.cpp:110:29: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  110 |  ok&=(s.size()==n&&ss.size()==n);
      |                    ~~~~~~~~~^~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:140:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  140 |  for(int i=0;i<c.size();i++) replacementSeq[i]=c[i];
      |              ~^~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10