Compilare: main.cpp: In function 'int main()': main.cpp:11:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n;i++) { ~^~ main.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<n;i++) { ~^~ main.cpp:20:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(col<n) { ~~~^~ main.cpp:27:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n-1;i++) ~^~~~ main.cpp:28:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1;j<n;j++) ~^~ main.cpp:30:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j-i+1>maxl) ~~~~~^~~~~ main.cpp:32:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(j-i+1==maxl) ~~~~~^~~~~~ main.cpp:36:59: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(thereis[0][k-1]==0&&maxi[0][k-1]-mini[0][k-1]+1==k) ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ main.cpp:40:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<k;i++) { ~^~ main.cpp:9:26: warning: 'n' is used uninitialized in this function [-Wuninitialized] unsigned int maxl=1, no=n; ^