Compilare: main.cpp: In function 'int main()': main.cpp:61:9: warning: unused variable 'x' [-Wunused-variable] 61 | int x, y, i, cost, test, j, k; | ^ main.cpp:61:12: warning: unused variable 'y' [-Wunused-variable] 61 | int x, y, i, cost, test, j, k; | ^ main.cpp:61:18: warning: unused variable 'cost' [-Wunused-variable] 61 | int x, y, i, cost, test, j, k; | ^~~~