Compilare: In file included from /usr/include/c++/6/cassert:44:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:33, from main.cpp:1: main.cpp: In function 'int main()': main.cpp:73:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(fol[i][tata[i]].size() >= cap); ~~~~~~~~~~~~~~~~~~~~~~~^~~~ main.cpp:81:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(lib[tata[i]][i].size() >= cap); ~~~~~~~~~~~~~~~~~~~~~~~^~~~ main.cpp:38:9: warning: unused variable 't' [-Wunused-variable] int t,i,j; ^