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郁闷很久了,路过的,请教一下!!#include<iostream> using namespace std; int way[10000][3],order[10000],how[101][101],gra[101][101]; bool flag[101][101]={false}; int cmp(void const *a,void const *b) { return(way[*(int *)a][0]-way[*(int *)b][0]); } int main() { int r,c,i,j,k,temp,max,x,y,xx,yy,hi,hj; scanf("%d%d",&r,&c); k=0; for(i=1;i<=r;i++) for(j=1;j<=c;j++) { scanf("%d",&way[k][0]); gra[i][j]=way[k][0]; way[k][1]=i; way[k++][2]=j; } for(i=0;i<k;i++) order[i]=i; qsort(order,k,sizeof(int),cmp); temp=order[0]; x=way[temp][1]; y=way[temp][2]; hi=way[temp][0]; flag[x][y]=true; how[x][y]=1; for(i=1;i<k;i++) { max=0; temp=order[i]; x=way[temp][1]; y=way[temp][2]; hi=way[temp][0]; xx=x+1; yy=y+0; hj=gra[xx][yy]; if(flag[xx][yy]&&hi!=hj&&how[xx][yy]>max) max=how[xx][yy]; xx=x+0; yy=y+1; hj=gra[xx][yy]; if(flag[xx][yy]&&hi!=hj&&how[xx][yy]>max) max=how[xx][yy]; xx=x-1; yy=y+0; hj=gra[xx][yy]; if(flag[xx][yy]&&hi!=hj&&how[xx][yy]>max) max=how[xx][yy]; xx=x+0; yy=y-1; hj=gra[xx][yy]; if(flag[xx][yy]&&hi!=hj&&how[xx][yy]>max) max=how[xx][yy]; if(max!=0) how[x][y]=max+1; else how[x][y]=1; flag[x][y]=true; } max=0; for(i=1;i<=r;i++) for(j=1;j<=c;j++) { if(how[i][j]>max) max=how[i][j]; } printf("%d\n",max); return 0; } Followed by:
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