Compilare: main.cpp: In function 'int main()': main.cpp:94:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<v.size(); j++) ~^~~~~~~~~ main.cpp:63:14: warning: unused variable 'k' [-Wunused-variable] int i,j, k, n, cnt=1, a, b, u,l, cnt2=1; ^ main.cpp:63:20: warning: variable 'cnt' set but not used [-Wunused-but-set-variable] int i,j, k, n, cnt=1, a, b, u,l, cnt2=1; ^~~ main.cpp:63:27: warning: unused variable 'a' [-Wunused-variable] int i,j, k, n, cnt=1, a, b, u,l, cnt2=1; ^ main.cpp:63:30: warning: unused variable 'b' [-Wunused-variable] int i,j, k, n, cnt=1, a, b, u,l, cnt2=1; ^ main.cpp:63:38: warning: variable 'cnt2' set but not used [-Wunused-but-set-variable] int i,j, k, n, cnt=1, a, b, u,l, cnt2=1; ^~~~