let main = (standardInput) => {
    var line = standardInput.split("\n");
    var largebox = line[0];
    var smallbox = line[2].split(" ");
    var int_largebox = Number(largebox); 
    var int_smallbox = smallbox.map(Number);
    // console.log(int_smallbox);
    int_smallbox.sort(
        function(a, b){
            return a - b;
        }
    );
    // console.log(int_smallbox);
    var max = 0;
    var count = 0;
    int_smallbox.forEach(function(element) {
    if ((max += element) <= int_largebox) {
        // console.log(element);
        count ++;
    }
});
console.log(count);
};

main(require('fs').readFileSync('/dev/stdin', 'UTF-8'));