Compilare: main.cpp: In function 'int main()': main.cpp:32:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m1].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:43:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[m1].size(); ++j) ~^~~~~~~~~~~~~ main.cpp:48:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m2].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:55:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[m2].size(); ++j) ~^~~~~~~~~~~~~ main.cpp:60:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m1].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:70:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m1].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:82:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[m1].size(); ++j) ~^~~~~~~~~~~~~ main.cpp:87:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m2].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:94:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[m2].size(); ++j) ~^~~~~~~~~~~~~ main.cpp:99:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m1].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:109:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m1].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:121:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[m1].size(); ++j) ~^~~~~~~~~~~~~ main.cpp:126:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m2].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:133:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[m2].size(); ++j) ~^~~~~~~~~~~~~ main.cpp:138:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m1].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:148:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[m1].size()>ma) ~~~~~~~~~~~~^~~ main.cpp:10:15: warning: unused variable 'mi' [-Wunused-variable]