Compilare: main.cpp: In function 'int main()': main.cpp:81:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<rz[i].size();++j) ~^~~~~~~~~~~~~ main.cpp:27:9: warning: unused variable 'm' [-Wunused-variable] int m,ok=0,i,j=0,cnt=4,h,l,r,t,n; ^ main.cpp:27:11: warning: unused variable 'ok' [-Wunused-variable] int m,ok=0,i,j=0,cnt=4,h,l,r,t,n; ^~ main.cpp:27:22: warning: unused variable 'cnt' [-Wunused-variable] int m,ok=0,i,j=0,cnt=4,h,l,r,t,n; ^~~ main.cpp:27:28: warning: unused variable 'h' [-Wunused-variable] int m,ok=0,i,j=0,cnt=4,h,l,r,t,n; ^ main.cpp:27:30: warning: unused variable 'l' [-Wunused-variable] int m,ok=0,i,j=0,cnt=4,h,l,r,t,n; ^ main.cpp:27:32: warning: unused variable 'r' [-Wunused-variable] int m,ok=0,i,j=0,cnt=4,h,l,r,t,n; ^ main.cpp:27:34: warning: unused variable 't' [-Wunused-variable] int m,ok=0,i,j=0,cnt=4,h,l,r,t,n; ^