Compilare: main.cpp: In function 'int main()': main.cpp:33:14: warning: statement has no effect [-Wunused-value] s<s2; ~^~~ main.cpp:39:14: warning: statement has no effect [-Wunused-value] s>s2; ~^~~ main.cpp:9:37: warning: unused variable 'cnt' [-Wunused-variable] int n,m,k,s=0,s2=0,r,s1=0,s21=0,cnt=0,ci; ^~~ main.cpp:9:43: warning: unused variable 'ci' [-Wunused-variable] int n,m,k,s=0,s2=0,r,s1=0,s21=0,cnt=0,ci; ^~