/*
** <problem_number> - <problem_title>
*/
// Common Template Starts //
//*
process.stdin.resume();
process.stdin.setEncoding("utf-8");
let inputString = "";
let currentLine = 0;
process.stdin.on("data", (inputStdin) => {
inputString += inputStdin;
});
process.stdin.on("end", (_) => {
inputString = inputString
.trim()
.split("\n")
.map((string) => {
return string.trim();
});
main();
});
function readline() {
return inputString[currentLine++];
}
// Common Template Ends //
// LIBRARY START //
const isOdd = (x) => { return x & 1 }
const isEven = (x) => { return !(x & 1) }
const reverseText = (s) => { return s.split('').reverse().join('') }
const hasDuplicates = (str) => (/([a-z])\1/i).test(str)
const hasDuplicateChar = (str, char) => str.indexOf(char) !== str.lastIndexOf(char)
const sort = arr => arr.sort( (a, b) => a - b )
const isSorted = arr => arr.every((v, i, a) => !i || a[i - 1] <= v)
const findAllIndicesOfChar = (str, char) => {
str = str.split('')
let indices = [];
for (let i = 0; i < str.length; i++) {
if (str[i] === char) indices.push(i);
}
return indices
}
const splitAt = index => x => [x.slice(0, index), x.slice(index)]
const isUpper = str => !/[a-z]/.test(str) && /[A-Z]/.test(str)
const escapeRegExp = (string) => string.replace(/[.*+\-?^$$${}()|[\]\\]/g, '\\$$$&')
const replaceAll = (str, find, replace) => str.replace(new RegExp(escapeRegExp(find), 'g'), replace)
const findUnique = (str) => {
return [...str].reduce((acc, curr) => {
return acc.includes(curr) ? acc : acc + curr;
}, "")
}
const unique = (str) => {
const cleanStr = str.replace(/ /gi, '');
const set = [...new Set(cleanStr)];
return set;
}
const sortASC = (array) => {
// var numArray = new Uint32Array(array)
// var numArray = new Int32Array(array)
var numArray = new Float64Array(array)
numArray = numArray.sort()
return numArray
}
const removeDuplicates = (array) => [...new Set(array)]
// LIBRARY END
function main() {
let input = readline()
let inputs = readline().split(' ').map(Number)
let result = 0
console.log( result )
}
//*/