Compilare: user.cpp: In function ‘int main()’: user.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=1;k<=m;k++) ^ user.cpp:42:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=1;k<m;k++) ^ user.cpp:51:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=m;i++) ^ user.cpp:52:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=m;j++) ^ user.cpp:67:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(xx>=1 && xx<=k+1 && yy>=1 && yy<=k+1) ^ user.cpp:67:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(xx>=1 && xx<=k+1 && yy>=1 && yy<=k+1) ^ user.cpp:98:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=2;k<=m;k++) ^ user.cpp:103:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(nr[k][i][j]==urm) ^