南阳理工OJ_题目541 最强DE 战斗力

#include <iostream>
#include <string.h>

using namespace std;

void fun(char *a, int n, int len);

int main()
{
	int N;
	cin >> N;
	while(N--)
	{
		int t;
		char a[200] = {'1'};
		int len;
		cin >> t;
		while(t >= 5)
		{
			len = strlen(a);
			fun(a, 3, len);
			t -= 3;
		}
		len = strlen(a);
		fun(a, t, len);
		
		int i = 190;
		while( a[i] == 0 )
			i--;
		for(; i >= 0; i--)
			cout << a[i];
		cout << endl;
	}
}

void fun(char *a, int n, int len)
{
	int t = 0;
	int i;
	for(i = 0; i < len; i++)
	{
		t = (a[i]-'0') * n + t;
		a[i] = t % 10 + '0';
		t = t / 10;
	}
	while(t != 0)
	{
		a[i] = t % 10 + '0';
		t /= 10;
		i++;
	}
}