Eroare de compilare: user.cpp:11:1: error: ‘unordered_map’ does not name a type unordered_map <int, int> exponent; ^ user.cpp: In function ‘int main()’: user.cpp:37:4: error: ‘exponent’ was not declared in this scope exponent[x] = i; ^ user.cpp:43:8: error: ‘exponent’ was not declared in this scope if (exponent[e] != 0) { ^ user.cpp:48:3: error: ‘exponent’ was not declared in this scope exponent.clear(); ^