function Main(input) {
    const foo = input.split("\n");
    const N = Number(foo[0]);
    const hoge = foo[1].split(" ");
    
    let cal = 0;
    for(let i = 0; i < N; i++) {
        cal = cal + Number(hoge[i]);
    }
    console.log(cal);
}

// Don't edit this line!
Main(require("fs").readFileSync("/dev/stdin", "utf8"));