// 浮点数误差比较验证程序
// 编译: g++ -o float_validator float_validator.cpp
// 使用: ./float_validator input.txt expected.txt result.txt

#include <iostream>
#include <fstream>
#include <cmath>
#include <iomanip>
using namespace std;

const double EPS = 1e-9;

int main(int argc, char* argv[]) {
    if (argc != 4) {
        cout << "WA" << endl;
        return 0;
    }
    
    ifstream expected(argv[2]);  // 标准答案
    ifstream result(argv[3]);    // 用户输出
    
    if (!expected.is_open() || !result.is_open()) {
        cout << "WA" << endl;
        return 0;
    }
    
    double exp_val, res_val;
    
    // 读取期望的浮点数
    if (!(expected >> exp_val)) {
        cout << "WA" << endl;
        return 0;
    }
    
    // 读取用户输出的浮点数
    if (!(result >> res_val)) {
        cout << "WA" << endl;
        return 0;
    }
    
    // 比较数值，允许相对误差和绝对误差
    double diff = fabs(exp_val - res_val);
    double rel_error = (fabs(exp_val) > EPS) ? diff / fabs(exp_val) : diff;
    
    if (diff <= 1e-6 || rel_error <= 1e-6) {  // 放宽误差范围
        cout << "AC" << endl;
    } else {
        cout << "WA" << endl;
    }
    
    expected.close();
    result.close();
    return 0;
}