Borderou de evaluare (job #631679)

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:51:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 51 | for (int i=sta; i<al.size(); i+=2) | ~^~~~~~~~~~ main.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 53 | for (int i=stn; i<ng.size(); i+=2) | ~^~~~~~~~~~