Compilare: user.cpp: In function ‘int main()’: user.cpp:34:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0,l=0,r=0;i<p.size();i++){ ^ user.cpp:36:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p[z[i]]==p[z[i]+i] && i+z[i]<p.size())z[i]++; ^ user.cpp:39:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<n;i++)if (z[1+st.size()+i]==st.size())a[i]=1;else a[i]=0; ^ user.cpp:43:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0,l=0,r=0;i<p.size();i++){ ^ user.cpp:45:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (p[z[i]]==p[z[i]+i] && i+z[i]<p.size())z[i]++; ^ user.cpp:48:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<n;i++)if (z[1+dr.size()+i]==dr.size())b[i+dr.size()-1]=1;else b[i+dr.size()-1]=0; ^ user.cpp:53:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (a[i]) ^