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Nov 10th, 2013
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C++ 0.68 KB | None | 0 0
  1. #include <iostream>
  2. #include <vector>
  3. #include <stdio.h>
  4. #include <string>
  5. using namespace std;
  6. int g[1510][1510];
  7. int d[1510][1510];
  8. int main()
  9. {
  10.     int n,i,j;
  11.     cin>>n;
  12.     for(i=1;i<=n;i++)
  13.         for(j=1;j<=n;j++)
  14.             scanf("%d",&g[i][j]);
  15.     if(n==2)
  16.     {
  17.         cout<<g[1][2];
  18.         return 0;
  19.     }
  20.     d[2][1]=g[1][2];
  21.     int mx,k;
  22.     for(i=3;i<=n;i++)
  23.     {
  24.         d[i][i-1]=1000000000;
  25.         for(j=1;j<i-1;j++)
  26.         {
  27.             d[i][j]=d[i-1][j]+g[i][i-1];
  28.             d[i][i-1]=min(d[i][i-1],d[i-1][j]+g[i][j]);
  29.         }
  30.     }
  31.     mx=1000000000;
  32.     for(i=1;i<n;i++)
  33.         mx=min(mx,d[n][i]);
  34.     cout<<mx;
  35.     return 0;
  36. }
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