http://poj.org/problem?id=1289 #include<iostream> using namespace std; int main(){ int init_hei, work_num; while(cin >> init_hei >> work_num && init_hei != 0){ int n = 0, v1, v2, x; bool flag = false; while(!flag){ // 模拟解方程(n+1)^x = init_hei, n^x = work_num。 n ++; x = 0; v1 = v2 = 1; while(1){ if(v1 > init_hei || v2 > work_num) break; if(v1 == init_hei && v2 == work_num){ flag = true; break; } v1 *= n + 1; v2 *= n; x ++; } } int nowork_num, hei, num, height_sum; if(n == 1) nowork_num = 0; // 切记比为1的情况应单独考虑。 else nowork_num = (work_num - 1) / (n - 1); hei = 1; num = work_num; height_sum = 0; for(int i = 0; i <= x; i ++){ // 逐项乘积相加。 height_sum += num * hei; hei *= n + 1; num /= n; } cout << nowork_num << ' ' << height_sum << endl; } return 0; }
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