Compilare: main.cpp: In function 'int main()': main.cpp:30:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (d+1>=v.size()) ~~~^~~~~~~~~~ main.cpp:14:17: warning: unused variable 't1' [-Wunused-variable] int max1=-1,t1,t2,r1,r2; ^~ main.cpp:14:20: warning: unused variable 't2' [-Wunused-variable] int max1=-1,t1,t2,r1,r2; ^~