結果
| 問題 |
No.157 2つの空洞
|
| コンテスト | |
| ユーザー |
lunnear
|
| 提出日時 | 2019-01-18 15:15:03 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,734 bytes |
| コンパイル時間 | 299 ms |
| コンパイル使用メモリ | 38,016 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-07-06 03:42:35 |
| 合計ジャッジ時間 | 939 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 14 WA * 2 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:78:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
78 | scanf("%d %d", &w, &h);
| ~~~~~^~~~~~~~~~~~~~~~~
main.cpp:184:32: warning: ‘v1’ may be used uninitialized in this function [-Wmaybe-uninitialized]
184 | ans += abs((*v0).y - (*v1).y);
| ~~~~~~^
main.cpp:184:22: warning: ‘v0’ may be used uninitialized in this function [-Wmaybe-uninitialized]
184 | ans += abs((*v0).y - (*v1).y);
| ~~~~~~^
ソースコード
#include <stdio.h>
#include <stdlib.h>
#include <list>
class Vector2
{
public:
Vector2(short x = 0, short y = 0):x(x), y(y){}
short x, y;
float LengthSq(){return (x * x + y * y);}
Vector2 operator -(Vector2 &a){return Vector2(x - a.x, y - a.y);}
};
struct Square
{
char val = -1;
bool check = false;
};
class Field
{
public:
Field(int w, int h);
~Field();
private:
int w, h;
Square *sq;
public:
Square* Get(int x, int y);
bool isField(int x, int y);
};
Field::Field(int w, int h)
{
this->w = w;
this->h = h;
sq = new Square[w * h];
}
Field::~Field()
{
delete[] sq;
}
Square* Field::Get(int x, int y)
{
return &sq[x + y * w];
}
bool Field::isField(int x, int y)
{
if(x < 0)
return false;
if(y < 0)
return false;
if(x >= w)
return false;
if(y >= h)
return false;
return true;
}
int main()
{
int w, h;
scanf("%d %d", &w, &h);
getchar();
Field f(w, h);
for(int y = 0; y < h; y++){
for(int x = 0; x < w; x++){
Square *s = f.Get(x, y);
s->val = (getchar() == '#')? 0:1;
}
getchar();
}
std::list<Vector2> holl[2];
int count = 0;
for(int y = 0; y < h; y++){
for(int x = 0; x < w; x++){
Square *s = f.Get(x, y);
if(s->check)
continue;
if(s->val != 1)
continue;
std::list<Vector2> history;
while(1)
{
s->check = true;
bool next = false;
const Vector2 d[4] = {
{-1, 0},
{ 1, 0},
{ 0, -1},
{ 0, 1}
};
for(int i = 0; i < 4; i++)
{
if(!f.isField(x + d[i].x, y + d[i].y))
continue;
Square *to = f.Get(x + d[i].x, y + d[i].y);
if(to->val && !to->check)
{
Vector2 v;
v.x = x; v.y = y;
history.push_back(v);
s = to;
x += d[i].x; y += d[i].y;
next = true;
break;
}
}
if(next)
continue;
holl[count].push_back(Vector2(x, y));
if(history.empty())
break;
Vector2 v = history.back();
s = f.Get(v.x, v.y);
x = v.x; y = v.y;
history.pop_back();
}
count++;
if(count == 2)
break;
}
if(count == 2)
break;
}
Vector2 *v0, *v1;
float min = 999;
for(auto i = holl[0].begin(); i != holl[0].end(); i++)
{
for(auto j = holl[1].begin(); j != holl[1].end(); j++)
{
Vector2 v = (*i) - (*j);
float l = v.LengthSq();
if(l < min)
{
v0 = &(*i);
v1 = &(*j);
min = l;
if(min == 4)// 2^2
break;
}
}
}
int ans = -1;
ans += abs((*v0).x - (*v1).x);
ans += abs((*v0).y - (*v1).y);
printf("%d\n", ans);
return 0;
}
lunnear