#include <fstream>

int main(){
    std::ofstream out("test.txt");
    for(int i=0; i<(int)1e9; i++){
        out << 1 << " ";
    }
    out.close();
    std::ifstream in("test.txt");
    for(int i=0; i<(int)1e9; i++){
        int x;
        in >> x;
    }
    return 0;
}