Compilare: main.cpp: In function 'int main()': main.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<s[i].length();++j) ~^~~~~~~~~~~~~~ main.cpp:33:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=j;k<s[i].length();++k) ~^~~~~~~~~~~~~~ main.cpp:52:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<s[n-1].length();j++) ~^~~~~~~~~~~~~~~~ main.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=j;k<s[n-1].length();++k) ~^~~~~~~~~~~~~~~~