Problem:
Score : 100 points

Problem Statement

You will be given a string S of length 3 representing the weather forecast for three days in the past.

The i-th character (1 \leq i \leq 3) of S represents the forecast for the i-th day. S, C, and R stand for sunny, cloudy, and rainy, respectively.

You will also be given a string T of length 3 representing the actual weather on those three days.

The i-th character (1 \leq i \leq 3) of S represents the actual weather on the i-th day. S, C, and R stand for sunny, cloudy, and rainy, respectively.

Print the number of days for which the forecast was correct.

Constraints

S and T are strings of length 3 each.

S and T consist of S, C, and R.

Input

Input is given from Standard Input in the following format:

S
T

Output

Print the number of days for which the forecast was correct.

Sample Input 1

CSS
CSR

Sample Output 1

2

For the first day, it was forecast to be cloudy, and it was indeed cloudy.

For the second day, it was forecast to be sunny, and it was indeed sunny.

For the third day, it was forecast to be sunny, but it was rainy.

Thus, the forecast was correct for two days in this case.

Sample Input 2

SSR
SSR

Sample Output 2

3

Sample Input 3

RRR
SSS

Sample Output 3

0

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.*;

public class Main {
	final static int MOD = 1000000007;
	
	public static void main(String[] args) {
		MyScanner in = new MyScanner();
		String s = in.nextLine();
		String t = in.nextLine();
		int count = 0;
		
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == t.charAt(i)) {
				count++;
			}
		}
		System.out.println(count);
		
		
	}
	
	static class MyScanner {
		static Scanner sc = new Scanner(System.in);
		
		String next() {
			return sc.next();
		}
		
		String nextLine() {
			return sc.nextLine();
		}
		
		int nextInt() {
			return Integer.parseInt(sc.next());
		}
		
		double nextDouble() {
			return Double.parseDouble(next());
		}
		
		long nextLong() {
			return Long.parseLong(next());
		}
		
		int[] nextIntArray(int n) {
			int[] array = new int[n];
			for (int i = 0; i < n; i++) {
				array[i] = nextInt();
			}
			return array;
		}
		
		double[] nextDoubleArray(int n) {
			double[] array = new double[n];
			for (int i = 0; i < n; i++) {
				array[i] = nextDouble();
			}
			return array;
		}
		
		long[] nextLongArray(int n) {
			long[] array = new long[n];
			for (int i = 0; i < n; i++) {
				array[i] = nextLong();
			}
			return array;
		}
		
		String[] nextLineArray(int n) {
			String[] array = new String[n];
			for (int i = 0; i < n; i++) {
				array[i] = nextLine();
			}
			return array;
		}
		
		int[][] nextIntMatrix(int n, int m) {
			int[][] matrix = new int[n][m];
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					matrix[i][j] = nextInt();
				}
			}
			return matrix;
		}
		
		double[][] nextDoubleMatrix(int n, int m) {
			double[][] matrix = new double[n][m];
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					matrix[i][j] = nextDouble();
				}
			}
			return matrix;
		}
		
		long[][] nextLongMatrix(int n, int m) {
			long[][] matrix = new long[n][m];
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					matrix[i][j] = nextLong();
				}
			}
			return matrix;
		}
	}
}