Compilare: main.cpp: In function 'int main()': main.cpp:35:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i > dr) ~~^~~~ main.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(dr < n && a[dr] == a[dr - st]) ~~~^~~ main.cpp:46:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(z[poz] < dr - i + 1) ~~~~~~~^~~~~~~~~~~~ main.cpp:51:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(dr < n && a[dr] == a[dr - st]) ~~~^~~ main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < n; ++i) ~~^~~ main.cpp:59:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(z[i] == pat.length()) ~~~~~^~~~~~~~~~~~~~~ main.cpp:62:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < n; ++i) ~~^~~ main.cpp:63:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(z[i] == pat.length()) ~~~~~^~~~~~~~~~~~~~~