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 <bits/stdc++.h>
#define NORTH 0
#define SOUTH 1
#define EAST 2
#define WEST 3
using namespace std;
const int N = 5e4 + 5;
struct Node {
int x, y;
int val;
int dir;
long long dist;
bool operator<(const Node& n) const {
if (val != n.val)
return val > n.val;
return dist < n.dist;
}
};
int h, w;
int a[N], b[N];
long long solve(int x, int y, int dir) {
int hl, hr, wl, wr;
long long ans = 0;
hl = hr = x;
wl = wr = y;
if (dir == 0) hl = max(hl - 1, 1);
else if (dir == 1) hr = min(hr + 1, h);
else if (dir == 2) wr = min(wr + 1, w);
else wl = max(wl - 1, 1);
priority_queue<Node> pq;
pq.push({x, y, 0, dir, 0});
while (!pq.empty()) {
auto n = pq.top();
//cout << n.x << " " << n.y << " " << n.dir << " " << n.dist << endl;
pq.pop();
ans = max(ans, n.dist);
if (n.dir == NORTH && n.x == 1)
continue;
if (n.dir == SOUTH && n.x == h)
continue;
if (n.dir == EAST && n.y == w)
continue;
if (n.dir == WEST && n.y == 1)
continue;
if (n.dir == NORTH) {
while (hl > 1 && a[hl] <= b[n.y])
--hl;
if (a[hl] <= b[n.y]) {
ans = max(ans, n.dist + n.x - hl);
continue;
}
pq.push({hl, n.y, a[hl], WEST, n.dist + n.x - hl});
pq.push({hl, n.y, a[hl], EAST, n.dist + n.x - hl});
} else if (n.dir == SOUTH) {
while (hr < h && a[hr] <= b[n.y])
++hr;
if (a[hr] <= b[n.y]) {
ans = max(ans, n.dist + hr - n.x);
continue;
}
pq.push({hr, n.y, a[hr], WEST, n.dist + hr - n.x});
pq.push({hr, n.y, a[hr], EAST, n.dist + hr - n.x});
} else if (n.dir == EAST) {
while (wr < w && b[wr] <= a[n.x])
++wr;
if (b[wr] <= a[n.x]) {
ans = max(ans, n.dist + wr - n.y);
continue;
}
pq.push({n.x, wr, b[wr], NORTH, n.dist + wr - n.y});
pq.push({n.x, wr, b[wr], SOUTH, n.dist + wr - n.y});
} else {
while (wl > 1 && b[wl] <= a[n.x])
--wl;
if (b[wl] <= a[n.x]) {
ans = max(ans, n.dist + n.y - wl);
continue;
}
pq.push({n.x, wl, b[wl], NORTH, n.dist + n.y - wl});
pq.push({n.x, wl, b[wl], SOUTH, n.dist + n.y - wl});
}
}
return ans;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr), cout.tie(nullptr);
int q;
cin >> h >> w >> q;
for (int i = 1; i <= h; ++i)
cin >> a[i];
for (int i = 1; i <= w; ++i)
cin >> b[i];
while (q--) {
int x, y;
cin >> x >> y;
long long ans = 0;
for (int i = 0; i < 4; ++i)
ans = max(ans, solve(x, y, i));
cout << ans << "\n";
}
return 0;
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |