CSAU - Welcome to CSAU
Welcome to the CSAU programming contest. CSAU decides to welcome their juniors in a special way. So they gave a simple problem to juniors and whoever solves the problem will be awarded with special gifts.
The problem is very simple. You will provided with a N×M rectangular board with lowercase English letters.
You need to find CSAU cards from the board. A CSAU card is 2×2 square in the board such that the 4 letters in the square form the word ‘csau’.
Input
The first line contains two space separated integers N and M
Following N lines describes the board. Each line contains M lowercase English letters.
Output
Print a single integer – the number of CSAU cards
Example
Input: 4 4 abcd acsa aaua abcd Output: 1
Input: 2 5 acsmw suazb Output: 2
Added by: | Raghavan |
Date: | 2015-10-03 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 GOSU JS-MONKEY |
Resource: | OWN PROBLEM |