結果
| 問題 | No.3733 My First Grid |
| コンテスト | |
| ユーザー |
👑 |
| 提出日時 | 2026-07-09 16:47:25 |
| 言語 | C++23(gcc16) (gcc 16.1.0 + boost 1.92.0 + ACL) |
| 結果 |
AC
不安定
|
| 実行時間 | 4 ms / 2,000 ms |
| + 4µs | |
| コード長 | 3,322 bytes |
| 記録 | |
| コンパイル時間 | 3,313 ms |
| コンパイル使用メモリ | 360,384 KB |
| 実行使用メモリ | 6,528 KB |
| 最終ジャッジ日時 | 2026-09-19 12:32:19 |
| 合計ジャッジ時間 | 5,606 ms |
|
ジャッジサーバーID (参考情報) |
judge3_0 / judge1_0 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 57 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
bool possible(int h, int w, int k) {
if (k == 0) {
return true;
}
if (h == 1 || w == 1) {
return k == 1;
}
int maximum = h * w - h - w + 2;
return 2 <= k && k <= maximum;
}
vector<string> transposeGrid(const vector<string>& grid) {
int h = static_cast<int>(grid.size());
int w = static_cast<int>(grid[0].size());
vector<string> result(w, string(h, '.'));
for (int row = 0; row < h; row++) {
for (int col = 0; col < w; col++) {
result[col][row] = grid[row][col];
}
}
return result;
}
vector<string> buildOriented(int h, int w, int k) {
vector<string> grid(h, string(w, '.'));
if (k == 0) {
return vector<string>(h, string(w, '#'));
}
if (h == 1) {
grid[0][0] = '#';
return grid;
}
if (k <= w) {
for (int col = 0; col < k - 1; col++) {
grid[0][col] = '#';
}
return grid;
}
int x = k - w;
vector<int> columns;
for (int col = 0; col < w; col += 2) {
columns.push_back(col);
}
int toothCount = static_cast<int>(columns.size());
int maxExtension = h - 2;
int oneCapacity = 0;
vector<int> oneIndices;
vector<int> twoIndices;
for (int index = 0; index < toothCount; index++) {
int col = columns[index];
if (col == 0 || col == w - 1) {
oneCapacity += maxExtension;
oneIndices.push_back(index);
} else {
twoIndices.push_back(index);
}
}
int twoCapacity = 2 * maxExtension * static_cast<int>(twoIndices.size());
int lower = max(0, x - twoCapacity);
int upper = min(oneCapacity, x);
int ones = -1;
for (int value = lower; value <= upper; value++) {
if (value % 2 == x % 2) {
ones = value;
break;
}
}
vector<int> lengths(toothCount, 1);
int remainingOnes = ones;
for (int index : oneIndices) {
int take = min(maxExtension, remainingOnes);
lengths[index] += take;
remainingOnes -= take;
}
int remainingTwos = (x - ones) / 2;
for (int index : twoIndices) {
int take = min(maxExtension, remainingTwos);
lengths[index] += take;
remainingTwos -= take;
}
int lastColumn = columns.back();
for (int col = 0; col <= lastColumn; col++) {
grid[0][col] = '#';
}
for (int index = 0; index < toothCount; index++) {
int col = columns[index];
for (int row = 0; row < lengths[index]; row++) {
grid[row][col] = '#';
}
}
return grid;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int h;
int w;
int k;
cin >> h >> w >> k;
if (!possible(h, w, k)) {
cout << -1 << '\n';
return 0;
}
vector<string> answer;
if (h == 1 || w == 1) {
if (h == 1) {
answer = buildOriented(h, w, k);
} else {
answer = transposeGrid(buildOriented(w, h, k));
}
} else if (w >= h) {
answer = buildOriented(h, w, k);
} else {
answer = transposeGrid(buildOriented(w, h, k));
}
for (const string& row : answer) {
cout << row << '\n';
}
return 0;
}