Compilare: user.cpp: In function ‘int main()’: user.cpp:77:11: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] v[lg] = __null; ^ user.cpp:100:23: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n", sol); ^ user.cpp:80:9: warning: unused variable ‘s’ [-Wunused-variable] int s, ss = 0, pos; ^ user.cpp:80:12: warning: unused variable ‘ss’ [-Wunused-variable] int s, ss = 0, pos; ^ user.cpp:70:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paranteze2.in", "r", stdin); ^ user.cpp:71:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paranteze2.out", "w", stdout); ^ user.cpp:72:32: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(v, 1000000, 1, stdin); ^