Compilare: user.cpp: In function ‘int main()’: user.cpp:63: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:64: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘void bkb(long long int, long long int, long long int, int)’: user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp: In function ‘void sol()’: user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds user.cpp:22: warning: array subscript is below array bounds