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 "wombats.h"
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define pp pop_back
#define mp make_pair
#define bb back
#define ff first
#define ss second
using namespace std;
vector<vector<int> > H, V, travel;
int R, C;
void build() {
vector<int> presum(C);
presum[0] = 0;
for (int i = 0; i < C-1; i++) {
presum[i+1] = H[0][i] + presum[i];
}
for (int i = 0; i < C; i++)
for (int j = 0; j < C; j++) {
if (i >= j)
travel[i][j] = presum[i]-presum[j];
else
travel[i][j] = presum[j]-presum[i];
}
for (int r = 1; r < R; r++) {
presum[0] = 0;
for (int i = 0; i < C-1; i++) {
presum[i+1] = H[r][i] + presum[i];
}
for (int i = 0; i < C; i++) {
vector<int> next(C, INT_MAX);
next[0] = travel[i][0] + V[r-1][0];
int now = next[0];
for (int j = 1; j < C; j++) {
now = min(now+H[r][j-1], travel[i][j] + V[r-1][j]);
next[j] = min(next[j], now);
}
next[C-1] = min(next[C-1], travel[i][C-1] + V[r-1][C-1]);
now = next[C-1];
for (int j = C-2; j >= 0; j--) {
now = min(now+H[r][j], travel[i][j] + V[r-1][j]);
next[j] = min(next[j], now);
}
travel[i] = next;
}
}
}
void init(int r, int c, int h[5000][200], int v[5000][200]) {
R = r, C = c;
H.resize(R, vector<int>(C));
V.resize(R, vector<int>(C));
travel.resize(C, vector<int>(C));
for (int i = 0; i < R; i++)
for (int j = 0; j < C-1; j++)
H[i][j] = h[i][j];
for (int i = 0; i < R-1; i++)
for (int j = 0; j < C; j++)
V[i][j] = v[i][j];
build();
}
void changeH(int P, int Q, int W) {
H[P][Q] = W;
build();
}
void changeV(int P, int Q, int W) {
V[P][Q] = W;
build();
}
int escape(int V1, int V2) {
return travel[V1][V2];
}
Compilation message (stderr)
grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
15 | int res;
| ^~~
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