Compilare: user.cpp: In function ‘int main()’: user.cpp:27:16: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> pat + 1 >> v + 1; ~~~~^~~ user.cpp:27:25: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] cin >> pat + 1 >> v + 1; ~~^~~ user.cpp:68:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(it = 0 ; it < sol . size () ; ++ it) ~~~^~~~~~~~~~~~~~~ user.cpp:59:47: warning: ‘z’ may be used uninitialized in this function [-Wmaybe-uninitialized] val2 = 1LL * ((val2 + mod) - 1LL * (z * code (v [p1]) % mod)); ~~^~~~~~~~~~~~~~~