Compilare: main.cpp: In function 'int main()': main.cpp:52:13: warning: statement has no effect [-Wunused-value] for(cont;cont<=m+n;cont++) ^ main.cpp:21:15: warning: unused variable 're' [-Wunused-variable] int p,m,n,re,um,i,cont,cont2,maxi; ^~ main.cpp:21:18: warning: unused variable 'um' [-Wunused-variable] int p,m,n,re,um,i,cont,cont2,maxi; ^~ main.cpp:21:34: warning: unused variable 'maxi' [-Wunused-variable] int p,m,n,re,um,i,cont,cont2,maxi; ^~~~