灯塔数量

#include <iostream>
#include "string"
using namespace std;

int main()
{
    int n = 1, m, sum, i;
    while (1)
    {
        m = n;
        sum = 0;
        for (i = 1; i < 8; i++)
        {
            m = m * 2;
            sum += m;
        }

        sum += n;
        if (sum == 765)
        {
            cout << "一楼灯：" << n << endl;
            cout << "八楼灯：" << m << endl;
            break;
        }
        n++;
    }
}