I got crash in test14,please help me!!!
this is my program:
#include <iostream>
#include <cstdio>
using namespace std;
int n,m,xia=0;
int fare[110][510];
int dp[110][510],jilu[70000];
char pre[110][510];
void init()
{
  int i,j;
  scanf("%d %d",&n,&m);
  for(i=0;i<=n+1;i++)
    for(j=0;j<=m+1;j++)
    {
      fare[i][j]=2000000000;
      dp[i][j]=2000000000;
    }
  for(i=1;i<=n;i++)
    for(j=1;j<=m;j++)
      scanf("%d",&fare[i][j]);
  for(i=1;i<=m;i++)
    dp[1][i]=fare[1][i];
}
void print(int i,int j)
{
  int k,ti,tj;
  while(1)
  {
    ++xia;
    jilu[xia]=j;
    ti=i;
    tj=j;
    if(pre[i][j]=='B')
      ti-=1;
    if(pre[i][j]=='L')
      tj-=1;
    if(pre[i][j]=='R')
      tj+=1;
    if(i==1)
      break;
    i=ti;
    j=tj;
  }
  for(k=xia;k>=1;k--)
    printf("%d\n",jilu[k]);
}
void solve()
{
  int i,j,end,temp=2000000000;
  for(i=2;i<=n;i++)
  {
    for(j=1;j<=m;j++)
    {
      if(dp[i-1][j]<=dp[i][j-1])
        if(dp[i-1][j]+fare[i][j]<dp[i][j])
        {
          dp[i][j]=dp[i-1][j]+fare[i][j];
          pre[i][j]='B';
        }
      if(dp[i-1][j]>dp[i][j-1])
        if(dp[i][j-1]+fare[i][j]<dp[i][j])
        {
          dp[i][j]=dp[i][j-1]+fare[i][j];
          pre[i][j]='L';
        }
      if(dp[i][j]>dp[i][j+1]+fare[i][j])
      {
        dp[i][j]=dp[i][j+1]+fare[i][j];
        pre[i][j]='R';
      }
    }
    for(j=m;j>=1;j--)
    {
      if(dp[i-1][j]<=dp[i][j-1])
        if(dp[i-1][j]+fare[i][j]<dp[i][j])
        {
          dp[i][j]=dp[i-1][j]+fare[i][j];
          pre[i][j]='B';
        }
      if(dp[i-1][j]>dp[i][j-1])
        if(dp[i][j-1]+fare[i][j]<dp[i][j])
        {
          dp[i][j]=dp[i][j-1]+fare[i][j];
          pre[i][j]='L';
        }
      if(dp[i][j]>dp[i][j+1]+fare[i][j])
      {
        dp[i][j]=dp[i][j+1]+fare[i][j];
        pre[i][j]='R';
      }
    }
  }
  for(i=1;i<=m;i++)
    if(dp[n][i]<temp)
    {
      temp=dp[n][i];
      end=i;
    }
  print(n,end);
}
int main()
{
  init();
  solve();
  return(0);
}