export {}
const input: number[] = require("fs").readFileSync(0,"utf8").toString().trim().split('\n').map(Number);
if(input[0]===0) console.log(0);
else {
    const exceptValue: number = Math.round(input[0]*0.15);
    const level = Math.round(input.slice(1).sort((a,b)=>a-b).slice(exceptValue,input[0]-exceptValue).reduce((acc,val)=>acc+val,0)/(input[0]-2*exceptValue));
    console.log(level);
}