对拍

makedata.cpp

#include <bits/stdc++.h>

int main() {
    int n = rand()%2000+1, k = rand()%n+1;
    printf("%d %d
", n, k);
    std::vector<int> v;
    for(int i = 1; i <= n; i++) {
        v.push_back( rand()%100001 );
    }
    for(int x: v) printf("%d
", x);
    return 0;
}

g++ std.cpp -std=c++11 -o std.out

g++ A.cpp -std=c++11 -o a.out

duipai.py(python3)

from os import system
for i in range(10000):
    system("./makedata.out > in")
    system("./a.out < in > out1")
    system("./std.out < in > out2")
    if(system("diff -bB out1 out2")):
        print("GG")
        exit(0)
    print("Passed %d..."%i)
    system("sleep 1")