Compilare: user.cpp: In function ‘void solve()’: user.cpp:20:21: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] sol+=(1<<par-1); ^ user.cpp: In function ‘int main()’: user.cpp:27:41: 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:28:43: 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:29:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(v+1, 1000000, 1, stdin); ^