Compilare: main.cpp: In function 'int main()': main.cpp:22:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(i=1;i<a.size();i++) | ~^~~~~~~~~ main.cpp:16:9: warning: unused variable 'n' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^ main.cpp:16:11: warning: unused variable 'm' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^ main.cpp:16:17: warning: unused variable 'k' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^ main.cpp:16:19: warning: unused variable 't' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^ main.cpp:16:21: warning: unused variable 'q' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^ main.cpp:16:23: warning: unused variable 'nr' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^~ main.cpp:16:26: warning: unused variable 'minim' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^~~~~ main.cpp:16:32: warning: unused variable 'maxim' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^~~~~ main.cpp:16:38: warning: unused variable 'suma' [-Wunused-variable] 16 | int n,m,i,j,k,t,q,nr,minim,maxim,suma,lungime_a; | ^~~~