Borderou de evaluare (job #631678)

Compilare: main.cpp: In function 'int main()': main.cpp:17:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 17 | if (a[i]!=a[n+1-i]) | ^ main.cpp:22:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 22 | for (int i=0; i<al.size(); ++i) | ~^~~~~~~~~~