function main(input) {

  const data = input.split("\n");
  const N = data[0];
  const second_line = data[1];
  const A = second_line.split(" ");
  let C = 0;

  for (let i = 0; i < A.length; i++) {
    const B = parseInt(A[i]);
    C += parseInt(A[i]);
  }
  console.log(C);
}
main(require("fs").readFileSync("/dev/stdin", "utf8"));