function Main(input:string) {
    const oridata=input.split("\n")[1]
    const datas=oridata.split(' ').map(i=>BigInt(i));
    const Answer=datas.reduce(function (accum:bigint,current:bigint){
        return accum+current
    },BigInt(0))

    console.log(String(Answer))
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));