Compilare: user.cpp: In function ‘int main()’: user.cpp:17:21: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> a[i] + 1; ~~~~~^~~ user.cpp:26:9: warning: unused variable ‘aa’ [-Wunused-variable] int aa; ^~ user.cpp:13:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("karma.in", "r", stdin); ^ user.cpp:14:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("karma.out", "w", stdout); ^