function solution(N) {
		    // write your code in JavaScript (Node.js 4.0.0)
		    var bin =  (N >>> 0).toString(2);
		    var max = 0;
		    var zeros = 0;
		    for(var i=0; i<bin.length; i++){
		        if(bin[i]==="0") {zeros++;}
		        else {
		            if (zeros > max) max = zeros;
		            zeros = 0;
		        }
		    }
		    return max;
		}