Compilare: user.cpp: In function ‘int main()’: user.cpp:18:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<=s.size()+1;i++)pr[i]=sf[i]=0; ^ user.cpp:21:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=t.size();i++)a[i]=0; ^ user.cpp:22:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=t.size();i++){ ^ user.cpp:28:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=s.size();i++){ ^ user.cpp:31:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(q==t.size()){ ^ user.cpp:42:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=d.size();i++)a[i]=0; ^ user.cpp:44:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=d.size();i++){ ^ user.cpp:50:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=s.size();i++){ ^ user.cpp:53:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(q==d.size()){ ^ user.cpp:60:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<s.size();i++)pr[i]=pr[i-1]+pr[i]; ^ user.cpp:64:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<s.size();i++)if(pr[i]!=pr[i-1])ans+=sf[i]; ^