Compilare: main.cpp: In function 'void solve()': main.cpp:30:9: warning: left operand of comma operator has no effect [-Wunused-value] 30 | x,y,k; | ^ main.cpp:30:13: warning: right operand of comma operator has no effect [-Wunused-value] 30 | x,y,k; | ^ main.cpp:30:14: warning: right operand of comma operator has no effect [-Wunused-value] 30 | x,y,k; | ^ main.cpp: In function 'int main()': main.cpp:43:9: warning: unused variable 't' [-Wunused-variable] 43 | int t=1; | ^