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yeulaptrinh.home.blog
 
#include <iostream>
using namespace std;
 
int main()
{
	string s;
	int kq=0;
	getline(cin,s);
	for (int i=0;i<=s.size()-1;i++)
	{
		int k=0;
		for (int j=i+1;j<=s.size();j++)
		{
			if (s[i]==s[j]) 
				k++;
				break;
		}
		if (k==0) kq++;
	}
	cout<<kq;
}

Main.java:1: error: class, interface, or enum expected
yeulaptrinh.home.blog
^
Main.java:3: error: illegal character: '#'
#include <iostream>
^
Main.java:6: error: class, interface, or enum expected
int main()
^
Main.java:9: error: class, interface, or enum expected
	int kq=0;
	^
Main.java:10: error: class, interface, or enum expected
	getline(cin,s);
	^
Main.java:11: error: class, interface, or enum expected
	for (int i=0;i<=s.size()-1;i++)
	^
Main.java:11: error: class, interface, or enum expected
	for (int i=0;i<=s.size()-1;i++)
	             ^
Main.java:11: error: class, interface, or enum expected
	for (int i=0;i<=s.size()-1;i++)
	                           ^
Main.java:14: error: class, interface, or enum expected
		for (int j=i+1;j<=s.size();j++)
		^
Main.java:14: error: class, interface, or enum expected
		for (int j=i+1;j<=s.size();j++)
		               ^
Main.java:14: error: class, interface, or enum expected
		for (int j=i+1;j<=s.size();j++)
		                           ^
Main.java:18: error: class, interface, or enum expected
		}
		^
Main.java:20: error: class, interface, or enum expected
	}
	^
Main.java:22: error: class, interface, or enum expected
}
^
14 errors

Standard output is empty