function Main (input) {
    var line = input.split("\n");
    var N = parseInt(line[0]);
    var data = line[1].split(" ");
    var sum ;
    
    for (var i= 1; i<= N; i++){
        sum += parseInt(data[i]);
    }
    console.log(sum);
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));