题解 | #求解立方根#

let num = readline();
let gen =0;
let minusNum = false;
if(num<0){
    num = -num;
    minusNum = true;
 }
while(gen*gen*gen <= num){
    gen=gen+0.01;
}
if(minusNum) console.log(-gen.toFixed(1));
else console.log(gen.toFixed(1));