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- ///MChenar
- #include <iostream>
- int v[1000001];
- using namespace std;
- int main()
- {
- int a[101][101]={},m,n,x,k=0;
- cin>>n>>m;
- for(int i=1;i<=n;i++){
- for(int j=1;j<=m;j++){
- cin>>a[i][j];
- }
- }
- for(int i=1;i<=n;i++)///parcurgem prima coloana si ultima coloana
- {
- x=a[i][1];///element din prima coloana
- v[x]++;
- x=a[i][m];///el din ultima coloana
- v[x]++;
- }
- for(int j=1;j<=m;j++)
- {
- x=a[1][j];///element de pe prima linie
- v[x]++;
- x=a[n][j];///element de pe ultima linie
- v[x]++;
- }
- for(int i=1;i<=1000000;i++)
- {
- if(v[i]>0)
- {
- cout<<i<<" ";
- }
- }
- return 0;
- }
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