Compilare: user.cpp: In function ‘int main()’: user.cpp:48:9: warning: variable ‘n1’ set but not used [-Wunused-but-set-variable] int n1,k1,c,t,i,maxn=0,maxk=0; ^~ user.cpp:48:12: warning: variable ‘k1’ set but not used [-Wunused-but-set-variable] int n1,k1,c,t,i,maxn=0,maxk=0; ^~ user.cpp:48:15: warning: unused variable ‘c’ [-Wunused-variable] int n1,k1,c,t,i,maxn=0,maxk=0; ^