#include <iostream> #include <iomanip> // 用于格式化输出 using namespace std; int main() { char level; double price; cin >> level >> price; double discount; switch(level) { case 'P': // 白金会员，7折 discount = 0.7; break; case 'G': // 金卡会员，8折 discount = 0.8; break; case 'S': // 银卡会员，9折 discount = 0.9; break; default: // 普通客户，9.5折 discount = 0.95; break; } double final_price = price * discount; cout << fixed << setprecision(2) << final_price << endl; return 0; }