Compilare: user.cpp: In function ‘void calc(int, int)’: user.cpp:8:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a[i+dx[k]][j+dy[k]]<min && a[i+dx[k]][j+dy[k]]<a[i][j] && i+dx[k]>0 && i+dx[k]<n+1 && j+dy[k]>0 && j+dy[k]<m+1) ^ user.cpp:8:87: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a[i+dx[k]][j+dy[k]]<min && a[i+dx[k]][j+dy[k]]<a[i][j] && i+dx[k]>0 && i+dx[k]<n+1 && j+dy[k]>0 && j+dy[k]<m+1) ^ user.cpp:8:115: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a[i+dx[k]][j+dy[k]]<min && a[i+dx[k]][j+dy[k]]<a[i][j] && i+dx[k]>0 && i+dx[k]<n+1 && j+dy[k]>0 && j+dy[k]<m+1) ^ user.cpp: In function ‘int main()’: user.cpp:33:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:34:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=m;j++) ^ user.cpp:36:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:37:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=m;j++) ^ user.cpp:39:68: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {elfus(i,j); val=l[i][j]; if(val>max || (val==max && a[i][j]<sol)) {max=val; sol=a[i][j]; }} ^ user.cpp:41:68: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {elfus(i,j); val=l[i][j]; if(val>max || (val==max && a[i][j]<sol)) {max=val; sol=a[i][j]; }} ^