Problem:
Score : 300 points

Problem Statement

You drew lottery N times. In the i-th draw, you got an item of the kind represented by a string S_i.

How many kinds of items did you get?

Constraints

1 \leq N \leq 2\times 10^5

S_i consists of lowercase English letters and has a length between 1 and 10 (inclusive).

Input

Input is given from Standard Input in the following format:

N
S_1
:
S_N

Output

Print the number of kinds of items you got.

Sample Input 1

3
apple
orange
apple

Sample Output 1

2

You got two kinds of items: apple and orange.

Sample Input 2

5
grape
grape
grape
grape
grape

Sample Output 2

1

Sample Input 3

4
aaaa
a
aaa
aa

Sample Output 3

4

Solution in C (GCC 9.2.1) (judge verdict: Wrong Answer)

#include <stdio.h>
#include <stdlib.h>
#define N 12200

int main(void){
	
	int c[N];
	for(int i = 0; i < N; i++){
		c[i] = 0;
	}
	int n,count = 0;
	char temp[11];
	scanf("%d",&n);
	for(int i = 0; i < n; i++){
		scanf("%s",temp);
		int k = 0;
		for(int j = 0; temp[j]!='\0'; j++){
			k += temp[j];
		}
		if(c[k]==0){
			c[k]++; count++;
		}
	}
	printf("%d",count);
	
}