Compilare: main.cpp: In function 'void KMP()': main.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<P.size(); ++i){ ~^~~~~~~~~ main.cpp:17:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(;i<P.size() and P[i]==P[i-i2];) ~^~~~~~~~~ main.cpp:18:18: warning: operation on 'i' may be undefined [-Wsequence-point] lps[i++]=i-i2; ~^~ main.cpp:21:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<P.size();++i) ~^~~~~~~~~ main.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0,j=0; i<S.size();) ~^~~~~~~~~ main.cpp:28:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==P.size()) ~^~~~~~~~~~ main.cpp:32:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(i<S.size() and P[j]!=S[i]) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:46:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<poz.size(); ++i) ~^~~~~~~~~~~