Compilare: main.cpp: In function 'int main()': main.cpp:12:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~ main.cpp:16:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=m; i++) ~^~~ main.cpp:64:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~ main.cpp:72:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~ main.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=m; i++) ~^~~ main.cpp:92:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l1!=h3[i]) ~~^~~~~~~ main.cpp:100:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=n; i++) ~^~~