Submission #774782

#	Time	Username	Problem	Language	Result	Execution time	Memory
774782		vjudge1	Stone Arranging 2 (JOI23_ho_t1)	C++17	0 / 100	8 ms	5204 KiB

Main

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n, x;
	map<int,int>mp;
	int a[200001], c[200001], b[200001], cnt;
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
	cin >> n;
	for(int i=0;i<n;i++)
	{
		cin >> a[i];
	}
	for(int i=n-1;i>=0;i++)
	{
		if(mp[a[i]] == 0)
		{
			mp[a[i]] = i;
			c[i] = i;
			b[i] = i;
		} 
		else 
		{
			c[i] = i;
			b[i] = mp[a[i]];
			mp[a[i]] = i;
		}
	}
	int p = 0;
	bool ck = false;
	while(p < n)
	{
		cnt = b[p] - c[p] + 1;
		if(!ck)
		{
			for(int i=1;i<=cnt;i++)
			{
				cout << a[p] << endl;
			}	
		} 
		else 
		{
			for(int i=1;i<=cnt-1;i++)
			{
				cout << a[p] << endl;
			}
		}
		p += cnt;
		if(cnt > 1)
		{
			p -= 1;
			ck = 1;
		} 
		else 
		{
			ck = false;
		}
	}
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:5:9: warning: unused variable 'x' [-Wunused-variable]
    5 |  int n, x;
      |         ^
Main.cpp:34:12: warning: 'b[p]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   34 |   cnt = b[p] - c[p] + 1;
      |         ~~~^
Main.cpp:34:19: warning: 'c[p]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   34 |   cnt = b[p] - c[p] + 1;
      |                ~~~^

• Subtask 1: 0 / 25
• Subtask 2: 0 / 35
• Subtask 3: 0 / 40