This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <stdio.h>
int N, A[2223][2223], D[2223][2223];
void input(void)
{
int i, j;
scanf("%d",&N);
for(i=1 ; i<=N ; i++)
for(j=1 ; j<=N ; j++)
scanf("%d",&A[i][j]);
}
int Dist(int X, int Y)
{
if(X>Y)
return 0;
return Y-X+1;
}
int MIN(int X, int Y)
{
if(X<Y)
return X;
return Y;
}
void process(void)
{
int i, j;
D[1][1]=0;
for(i=2 ; i<=N ; i++)
{
D[1][i]=D[1][i-1]+Dist(A[1][i-1],A[1][i]);
D[i][1]=D[i-1][1]+Dist(A[i-1][1],A[i][1]);
}
for(i=2 ; i<=N ; i++)
for(j=2 ; j<=N ; j++)
D[i][j]=MIN(D[i][j-1]+Dist(A[i][j-1],A[i][j]),D[i-1][j]+Dist(A[i-1][j],A[i][j]));
}
void output(void)
{
printf("%d",D[N][N]);
}
int main(void)
{
input();
process();
output();
return 0;
}
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