54 lines
721 B
C++
54 lines
721 B
C++
#include<bits/stdc++.h>
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using namespace std;
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int main() {
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int n,m,j,i,x,y;
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scanf("%d %d",&n,&m);
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int a[n][m];
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int b[n*m];
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for(i=0; i<n; i++)
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for(j=0; j<m; j++)
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scanf("%d",&a[i][j]);
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x=0;
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y=0;
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int k=0;
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while(k<n*m) {
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while(a[x][y]!=-1&&x<n) {
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b[k]=a[x][y];
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a[x][y]=-1;
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x++;
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k++;
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}
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x--;
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y++;
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while(a[x][y]!=-1&&y<m) {
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b[k]=a[x][y];
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a[x][y]=-1;
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y++;
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k++;
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}
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y--;
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x--;
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while(a[x][y]!=-1&&x>=0) {
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b[k]=a[x][y];
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a[x][y]=-1;
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x--;
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k++;
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}
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x++;
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y--;
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while(a[x][y]!=-1&&y>=0) {
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b[k]=a[x][y];
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a[x][y]=-1;
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y--;
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k++;
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}
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y++;
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x++;
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}
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for(i=0; i<k; i++)
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printf("%d ",b[i]);
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return 0;
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}
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