OJ-Problems-Source/HDOJ/1208_autoAC.cpp
2016-08-13 17:16:08 +08:00

35 lines
671 B
C++

#include<stdio.h>
#include<string.h>
int main ()
{
__int64 dp[50][50];
int map[50][50];
int i,j,n;
char c;
while(~scanf("%d",&n)&&n!=-1)
{
getchar();
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
{
scanf("%c",&c);
map[i][j]=c-48;
}
getchar();
}
memset(dp,0,sizeof(dp));
dp[1][1]=1;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{
if(!map[i][j])
continue;
dp[i+map[i][j]][j]+=dp[i][j];
dp[i][j+map[i][j]]+=dp[i][j];
}
printf("%I64d\n",dp[n][n]);
}
return 0;
}