Compilare: user.cpp: In function ‘void solveTask1(std::pair<int, int>)’: user.cpp:53:9: warning: unused variable ‘a’ [-Wunused-variable] int a, b, na, nb; ^ user.cpp:53:12: warning: unused variable ‘b’ [-Wunused-variable] int a, b, na, nb; ^ user.cpp:53:15: warning: unused variable ‘na’ [-Wunused-variable] int a, b, na, nb; ^ user.cpp:53:19: warning: unused variable ‘nb’ [-Wunused-variable] int a, b, na, nb; ^ user.cpp: In function ‘int main()’: user.cpp:160:28: warning: ‘cstart’ may be used uninitialized in this function [-Wmaybe-uninitialized] else solveTask2(cstart); ^