#include "wombats.h"
#include <iostream>
#include <vector>
#include <set>
#include <queue>
#include <string>
#define rep(i, n) for (int i=0; i<(n); i++)
#define pb push_back
#define INF 1145141919
#define _1 first
#define _2 second
using namespace std;
const int B = 1000;
int W, H;
int yoko[200][5000];
int tate[200][5000];
int dp[200][200];
void update() {
rep(src, W) {
rep(x, W) dp[src][x] = INF;
dp[src][src] = 0;
rep(x, W-1) dp[src][x+1] = min(dp[src][x+1], dp[src][x]+yoko[x][0]);
for (int x=W-1; x>0; x--) dp[src][x-1] = min(dp[src][x-1], dp[src][x]+yoko[x-1][0]);
rep(y, H-1) {
rep(x, W) dp[src][x] += tate[x][y];
rep(x, W-1) dp[src][x+1] = min(dp[src][x+1], dp[src][x]+yoko[x][y+1]);
for (int x=W-1; x>0; x--) dp[src][x-1] = min(dp[src][x-1], dp[src][x]+yoko[x-1][y+1]);
}
}
}
void init(int R, int C, int _yoko[5000][200], int _tate[5000][200]) {
W = C, H = R;
rep(y, H) rep(x, W-1) yoko[x][y] = _yoko[y][x];
rep(x, W) rep(y, H-1) tate[x][y] = _tate[y][x];
update();
}
void changeH(int P, int Q, int W) {
yoko[Q][P] = W;
update();
}
void changeV(int P, int Q, int W) {
tate[Q][P] = W;
update();
}
int escape(int V1, int V2) {
return dp[V1][V2];
}
