convolution.js

var input = [];
readline_object.on("line", (value) => { //Read input values
	input.push(value);
})
readline_object.on("close", ContestResponse); 

function ContestResponse(){
	input = input.slice(1)
	let cases = []
	let data = input.map(l => l.split(''))
	for (var i = 0; i < data.length; i++) {
	    let line = data[i]
	    for (var j = 0; j < line.length; j++) {
          if (line[j] !== 'X') continue
          for (var t = i-1; t < i+2; t++) {
              for (var k = j-1; k < j+2; k++) {
                  if (!(t < 0 || k < 0 || t >= data.length || k >= line.length || data[t][k] == 'X')) {
                    cases.push(t + ',' + k)
                  }
              }
          }
	    }
	}
	
	let newCases = Array.from(new Set(cases))
	console.log(newCases.length)
}