#include <bits/stdc++.h>

using namespace std;

int main() {
    ios::sync_with_stdio(false); //读入输出优化的强迫症
    int n = 1;
    int n_1 = 0;
    //求最大整数值:2147483647
    while (n > 0) {
        n++;
        n_1++;
    }
    cout << n_1 << endl;

    //求最小整数值:-2147483648
    n = -1;
    n_1 = 0;
    while (n < 0) {
        n--;
        n_1--;
    }
    cout << n_1 << endl;

    //double 型浮点数能精确到多少位小数:0.33333333333333331483
    double i = 1.0, j = 3.0;
    printf("%.20lf\n", i / j);
    return 0;
}