const cin = [];
const reader = require('readline').createInterface({
    input: process.stdin,
    output: process.stdout
});
reader.on('line', (line)=>{ cin.push(line); });
process.stdin.on('end', ()=>{main()});

Array.prototype.map_toInt = function(){ return this.map((e)=>+e); };

function main(){
    const N = +cin.shift();
    console.log(
        cin.shift().split(" ").map_toInt().reduce((s,e,i)=>(s+e))
    );
}