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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#729934 | #9564. Hey, Have You Seen My Kangaroo? | ucup-team5062 | WA | 2315ms | 32672kb | C++20 | 4.0kb | 2024-11-09 18:04:04 | 2024-11-09 18:04:11 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
int H, W, K;
int Answer[1 << 18];
string C[1 << 18];
string S;
// Other than input
bool Used[1 << 18];
bool Cycle[1 << 18];
int P[1 << 18];
int Dist[1 << 18];
int Count[1 << 18];
vector<int> G[1 << 18];
// Simulation
int V1[1 << 18];
int V2[1 << 18];
bool CycleUsed[1 << 18];
int CycleCount[1 << 18];
int GetNext(int px, int py, char c) {
if (c == 'U') {
if (px >= 1 && C[px - 1][py] == '1') px--;
}
if (c == 'D') {
if (px <= H - 2 && C[px + 1][py] == '1') px++;
}
if (c == 'L') {
if (py >= 1 && C[px][py - 1] == '1') py--;
}
if (c == 'R') {
if (py <= W - 2 && C[px][py + 1] == '1') py++;
}
return px * W + py;
}
pair<int, int> Simulation(int px, int py, int cl, int cr) {
for (int i = cl; i < cr; i++) {
int idx = (i >= K ? i - K : i);
if (S[idx] == 'U') {
if (px >= 1 && C[px - 1][py] == '1') px--;
}
if (S[idx] == 'D') {
if (px <= H - 2 && C[px + 1][py] == '1') px++;
}
if (S[idx] == 'L') {
if (py >= 1 && C[px][py - 1] == '1') py--;
}
if (S[idx] == 'R') {
if (py <= W - 2 && C[px][py + 1] == '1') py++;
}
}
return make_pair(px, py);
}
void dfs(int pos) {
Dist[pos] = 0;
for (int to : G[pos]) {
dfs(to);
Dist[pos] = max(Dist[pos], Dist[to] + 1);
}
}
int main() {
int DEBUG = 1;
// Step 1. Input
cin >> H >> W >> K;
if (DEBUG == 1) {
cin >> S;
for (int i = 0; i < H; i++) cin >> C[i];
}
if (DEBUG == 2) {
for (int i = 0; i < K; i++) {
string str = "LRUD";
S += str[rand() % 4];
}
for (int i = 0; i < H; i++) {
for (int j = 0; j < W; j++) C[i] += ('0' + (rand() % 100 < 99 ? 1 : 0));
}
}
for (int i = 1; i <= H * W; i++) Answer[i] = (1 << 30);
// Step 2. Pre Simulation
for (int i = 0; i < H * W; i++) {
if (C[i / W][i % W] == '0') continue;
pair<int, int> v = Simulation(i / W, i % W, 0, K);
V1[i] = i;
V2[i] = v.first * W + v.second;
}
// Step 3. Brute Force
for (int i = 0; i < K; i++) {
for (int j = 0; j <= H * W + 2; j++) Used[j] = false;
for (int j = 0; j <= H * W + 2; j++) Cycle[j] = false;
for (int j = 0; j <= H * W + 2; j++) CycleUsed[j] = false;
for (int j = 0; j <= H * W + 2; j++) G[j].clear();
for (int j = 0; j <= H * W + 2; j++) Count[j] = 0;
for (int j = 0; j <= H * W + 2; j++) CycleCount[j] = 0;
// Simulation
int root = 0;
for (int j = 0; j < H * W; j++) {
if (C[j / W][j % W] == '0') continue;
Used[V1[j]] = true;
P[V1[j]] = V2[j];
root = V1[j];
}
// Get Cycles
for (int k = 0; k < H * W; k++) {
if (CycleUsed[k] == true) continue;
// Cycles
int cx = k, l = 0;
for (int j = 0; j < 2 * H * W; j++) {
if (CycleUsed[cx] == true) break;
cx = P[cx]; l = j;
CycleCount[cx] += 1;
if (CycleCount[cx] >= 2) Cycle[cx] = true;
if (CycleCount[cx] == 3) break;
}
cx = k;
for (int j = 0; j <= l; j++) {
CycleUsed[cx] = true;
cx = P[cx];
}
}
for (int j = 0; j < H * W; j++) {
if (Used[j] == false || Cycle[j] == true) continue;
G[P[j]].emplace_back(j);
}
// Get Distance
for (int j = 0; j < H * W; j++) {
if (Cycle[j] == false) continue;
dfs(j);
}
// Get Answer
for (int j = 0; j < H * W; j++) {
if (Used[j] == false) continue;
int dst = Dist[j];
if (Cycle[j] == true) dst = H * W + 1;
Count[dst] += 1;
}
for (int j = H * W + 1; j >= 1; j--) Count[j - 1] += Count[j];
// Update Answer
for (int j = 0; j <= H * W; j++) {
Answer[Count[j]] = min(Answer[Count[j]], j * K + i);
}
for (int j = 0; j < H * W; j++) {
if (C[j / W][j % W] == '0') continue;
V1[j] = GetNext(V1[j] / W, V1[j] % W, S[i]);
V2[j] = GetNext(V2[j] / W, V2[j] % W, S[i]);
}
}
// Step 4. Output
for (int i = 2; i <= H * W; i++) Answer[i] = min(Answer[i], Answer[i - 1]);
for (int i = 1; i <= H * W; i++) {
if (Answer[i] == (1 << 30)) printf("-1\n");
else printf("%d\n", Answer[i]);
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 4ms
memory: 18792kb
input:
3 3 6 ULDDRR 010 111 010
output:
-1 4 2 1 0 0 0 0 0
result:
ok 9 numbers
Test #2:
score: 0
Accepted
time: 3ms
memory: 18112kb
input:
3 3 6 ULDDRR 010 111 011
output:
7 4 2 1 1 0 0 0 0
result:
ok 9 numbers
Test #3:
score: 0
Accepted
time: 4ms
memory: 20768kb
input:
1 5 1 R 11111
output:
4 3 2 1 0
result:
ok 5 number(s): "4 3 2 1 0"
Test #4:
score: -100
Wrong Answer
time: 2315ms
memory: 32672kb
input:
1 200000 200 RDRLDRULURDLDRULLRULLRRULRULRDLLDLRUDDLRURLURLULDRUUURDLUDUDLLLLLURRDURLUDDRRLRRURUUDDLLDDUUUDUULRLRUDULRRUURUDDDDLULULLLLLLLLLLLUDURLURLRLLRRRURUURLUDULDUULRRLULLRUDRDRUUDDRUDRDLLDLURDDDURLUULDRRDLDD 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111...
output:
3999923 3999865 3999864 3999740 3999729 3999728 3999727 3999726 3999725 3999724 3999723 3999665 3999600 3999540 3999529 3999528 3999527 3999526 3999525 3999524 3999523 3999465 3999400 3999340 3999329 3999328 3999327 3999326 3999325 3999324 3999323 3999265 3999200 3999140 3999129 3999128 3999127 3999...
result:
wrong answer 13th numbers differ - expected: '3999664', found: '3999600'