Eroare de compilare: user.cpp: In function ‘void caut(int)’: user.cpp:27:33: error: no match for ‘operator[]’ (operand types are ‘std::pair<int, int>’ and ‘int’) if(nc==mc[vecin][0].first) ^ user.cpp:28:37: error: no match for ‘operator[]’ (operand types are ‘std::pair<int, int>’ and ‘int’) s.push(mc[vecin][0].second); ^ user.cpp:29:38: error: no match for ‘operator[]’ (operand types are ‘std::pair<int, int>’ and ‘int’) else s.push(mc[vecin][0].first); ^ user.cpp: In function ‘int main()’: user.cpp:48:15: error: ‘struct std::pair<int, int>’ has no member named ‘push_back’ mc[i].push_back({a,b}); ^