Compilare: main.cpp: In function 'long long unsigned int A(int*, int*)': main.cpp:13:14: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 13 | for(i=1;i<=a[0];++i) { | ~^~~~~~ main.cpp:14:22: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 14 | for(t=0,j=1;j<=b[0]||t;c[i+j-1]=(t+=c[i+j-1]+a[i]*b[j])%10,++j,t/=10); | ~^~~~~~ main.cpp:15:17: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 15 | if(i+j-2>c[0]) | ~~~~~^~~~~