IPSC 2014 A

gistfile1.js

var input = [],
    s2n = function (s) { return parseInt(s, 10) },
    solve = function (r, c, candy_box) {
        var result = 0;
        for (var i = 0; i < r; i += 1) {
            for (var j = 0; j < c; j += 1) {
                if (candy_box[i][j] !== 'o')
                    continue;
                if (j > 0 && j < c - 1 && candy_box[i][j - 1] === '>' && candy_box[i][j + 1] === '<') {
                    result += 1;
                }

                if (i > 0 && i < r - 1 && candy_box[i - 1][j] === 'v' && candy_box[i + 1][j] === '^') {
                    result += 1;
                }
            }
        }
        return result;
    };

require('readline')
.createInterface(process.stdin, {})
.on('line', function(line) {
    input.push(line.trim());
}).on('close', function() {
    var line = 2, rc;
    while (line < input.length) {
        rc = input[line++].split(' ').map(s2n);
        console.log(solve(rc[0], rc[1], input.slice(line, line + rc[0])));
        line += rc[0] + 1;
    }
});