压位高精，60pts，求问这题怎么过

#include<bits/stdc++.h>
using namespace std;
#define jw 100000//5位
long long a[100000] = {0, 1};
int main() {
    int p, l = 1;
    cin >> p;
    int t1 = p / 40, t2 = p % 40;
    for (int i = 1; i <= t1; i++) {
        for (int j = 1; j <= l; j++)
            a[j] *= 1099511627776; //2^40
        for (int j = 1; j < l; j++) {
            if (a[j] >= jw) {
                a[j + 1] += a[j] / jw;
                a[j] %= jw;
            }
        }
        while (a[l] >= jw) {
            a[l + 1] += a[l] / jw;
            a[l] %= jw;
            l++;
        }
//      for (int i = l; i > 0; i--)
//          cout << a[i];
//      cout << endl;
    }
    for (int i = 1; i <= t2; i++) {
        for (int j = 1; j <= l; j++)
            a[j] *= 2;
        for (int j = 1; j < l; j++)
            if (a[j] >= jw) {
                a[j + 1] += a[j] / jw;
                a[j] %= jw;
            }
        while (a[l] >= jw) {
            a[l + 1] += a[l] / jw;
            a[l] %= jw;
            l++;
        }
    }

    a[1]--;
    while (!a[l])l--;
    int ws = l * 5 - 5, b = a[l];
    while (b)b /= 10, ws++;
    cout << ws << endl;
    for (int i = 100; i > 0; i--) {
        if (i % 10 == 0 && i != 100)
            cout << '\n';
        printf("%05lld", a[i]);
    }
    return 0;
}