Compilare: main.cpp: In function 'int main()': main.cpp:33:21: warning: unused variable 's1' [-Wunused-variable] 33 | int n, m, a, b, s1, s2, f1, f2; | ^~ main.cpp:33:25: warning: unused variable 's2' [-Wunused-variable] 33 | int n, m, a, b, s1, s2, f1, f2; | ^~ main.cpp:33:29: warning: unused variable 'f1' [-Wunused-variable] 33 | int n, m, a, b, s1, s2, f1, f2; | ^~ main.cpp:33:33: warning: unused variable 'f2' [-Wunused-variable] 33 | int n, m, a, b, s1, s2, f1, f2; | ^~