Compilare: user.cpp: In function ‘int main()’: user.cpp:15:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>> s + 1; ^ user.cpp:37:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ii = 0; ii < v[i].size(); ii++){ ^ user.cpp:50:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v[ii].size(); i++){ ^