Compilare: main.cpp: In function 'int main()': main.cpp:47:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<st.size();i++) ~^~~~~~~~~~ main.cpp:59:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<dr.size();i++) ~^~~~~~~~~~ main.cpp:93:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sortst.size();i++) ~^~~~~~~~~~~~~~ main.cpp:109:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<dr.size();i++) ~^~~~~~~~~~ main.cpp:114:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1;j<dr.size();j++) ~^~~~~~~~~~