MaxNumber

let input =[3,
    1,
    2,
    3,
];
let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);



const n =+gets();
let maxValue = 0;
for(let i=0; i <= n;i++){
let number =+gets();
if(number >= maxValue){
    maxValue=number;
}

}
print(maxValue);