Compilare: user.cpp: In function ‘int main()’: user.cpp:16:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>> a + 1; ^ user.cpp:18:17: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin>> b + 1; ^ user.cpp:57:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ii = 0; ii < h[x].size(); ii++){ ^ user.cpp:64:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < v[i].size(); j++){ ^