#include <iostream> using namespace std; int main() { int count = 0; // 记录解的数量 // 枚举九头鸟的可能数量,最多11只(因为12只九头鸟就有108个头,超过了100) for (int bird = 0; bird <= 11; bird++) { // 枚举鸡的可能数量,最多100只 for (int chicken = 0; chicken <= 100; chicken++) { // 计算兔子的数量,根据头的总数为100 int rabbit = 100 - 9 * bird - chicken; // 检查兔子数量是否非负 if (rabbit >= 0) { // 检查脚的总数是否为100 if (2 * bird + 2 * chicken + 4 * rabbit == 100) { cout << bird << " " << chicken << " " << rabbit << endl; count++; } } } } // 输出解的总数 cout << count << endl; return 0; } /************************************************************** Problem: 1076 User: linzihang Language: C++ Result: Accepted Time:4 ms Memory:2072 kb ****************************************************************/