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/*<2A><>ɫ<EFBFBD><C9AB>:<3A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>color<6F>IJ<EFBFBD><C4B2><EFBFBD>*/
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#include<stdio.h>
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int a[51][51];
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int book[51][51];
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int n, m, sum;
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void dfs(int x, int y, int color) {
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int k, tx, ty;
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//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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int next[4][2] = { { 0, 1 },//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{ 1, 0 },//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{ 0, -1 },//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{ -1, 0 }
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};//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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a[x][y] = color;//<2F><>a[x][y]<5D><><EFBFBD><EFBFBD>Ⱦɫ
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//ö<><C3B6><EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD><EFBFBD><EFBFBD>
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for (k = 0; k<4; k++) {
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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tx = x + next[k][0];
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ty = y + next[k][1];
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//<2F>ж<EFBFBD><D0B6>Ƿ<EFBFBD>Խ<EFBFBD><D4BD>
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if (tx<1 || tx>n || ty<1 || ty>m)
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continue;
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//<2F>ж<EFBFBD><D0B6>Ƿ<EFBFBD><C7B7><EFBFBD>½<EFBFBD><C2BD>
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if (a[tx][ty]>0 && book[tx][ty] == 0) {
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sum++;
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book[tx][ty] = 1; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><D1BE>߹<EFBFBD>
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dfs(tx, ty, color);//<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>
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}
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}
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return;
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}
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int main() {
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int i, j, startx, starty;
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scanf("%d %d %d %d", &n, &m, &startx, &starty);
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ
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for (i = 1; i <= n; i++)
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for (j = 1; j <= m; j++)
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scanf("%d", &a[i][j]); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ
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book[startx][starty] = 1;
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sum = 1;
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dfs(startx, starty, -1);//<2F><>-1<><31>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ⱦɫ
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//<2F><><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD>Ⱦɫ<C8BE><C9AB><EFBFBD>ĵ<EFBFBD>ͼ
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for (i = 1; i <= n; i++) {
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for (j = 1; j <= m; j++) {
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printf("%3d", a[i][j]);//%3d<33>е<EFBFBD>3<EFBFBD><33>c<EFBFBD><63><EFBFBD><EFBFBD><EFBFBD>еij<D0B5><C4B3><EFBFBD>
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}
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printf("\n");
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}
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getchar();
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getchar();
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return 0;
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}
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