Eroare de compilare: main.cpp:22:1: error: 'stack' does not name a type stack<int> stiva; ^~~~~ main.cpp: In function 'int main()': main.cpp:30:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i = 0;i<sir.size();i++) { ~^~~~~~~~~~~ main.cpp:32:13: error: 'stiva' was not declared in this scope stiva.push(i * 1ll); ^~~~~ main.cpp:35:16: error: 'stiva' was not declared in this scope if(stiva.size()) { ^~~~~ Non zero exit status: 1