上一次：https://www.luogu.com.cn/discuss/540742

#include "testlib.h"
int main(int argc, char* argv[]) {
    registerTestlibCmd(argc, argv);
    int n = inf.readInt();
    while(n--){
        double pans = ouf.readDouble();
        double jans = ans.readDouble();
        if(!doubleCompare(jans, pans, 0.000000001)){
            quitf(_wa, "The answer is wrong.");
        }
    }
    quitf(_ok, "The answer is correct.");
    return 0;
}//SPJ by zhang_kevin