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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#286979 | #7970. 三步棋 | iterater | AC ✓ | 107ms | 353324kb | C++14 | 3.6kb | 2023-12-19 10:20:38 | 2023-12-19 10:20:38 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int N = (1 << 25);
int bitcount[N];
struct grid { bool a[5][5]; } Empty, x;
char s[5][5];
vector < pair <int, int> > pattern;
int caseID, dfn[N], patternDfn[N];
bool f[N], g[N];
bool hasPattern(int s)
{
if (patternDfn[s] == caseID) return g[s];
patternDfn[s] = caseID;
for (int i = 0; i < 5; i++)
for (int j = 0; j < 5; j++)
if (x.a[i][j])
{
bool valid = 1;
for (auto cur : pattern)
{
int di = cur.first, dj = cur.second;
int pi = i + di, pj = j + dj;
if (pi < 0 || pi > 4 || pj < 0 || pj > 4) { valid = 0; break; }
if (!x.a[pi][pj]) { valid = 0; break; }
}
if (valid) return g[s] = 1;
}
return g[s] = 0;
}
int sum;
bool dfs(int s)
{
if (hasPattern(s))
{
if (bitcount[s] % 3 == 0) return 0;
else return 1;
}
if (dfn[s] == caseID) return f[s];
dfn[s] = caseID;
for (int i = 0; i < 5; i++)
for (int j = 0; j < 5; j++)
{
if (x.a[i][j]) continue;
x.a[i][j] = 1;
bool res = dfs(s + (1 << (i * 5 + j)));
x.a[i][j] = 0;
if (!res) return f[s] = 1;
}
return f[s] = 0;
}
map < vector < pair <int, int> >, bool> h;
vector < pair <int, int> > trans(vector < pair <int, int> > v)
{
for (int i = 0; i < (int) v.size(); i++) swap(v[i].first, v[i].second);
sort(v.begin(), v.end());
for (int i = (int) v.size() - 1; i >= 0; i--) v[i] = make_pair(v[i].first - v[0].first, v[i].second - v[0].second);
return v;
}
vector < pair <int, int> > reflectx(vector < pair <int, int> > v)
{
for (int i = 0; i < (int) v.size(); i++) v[i] = make_pair(4 - v[i].first, v[i].second);
sort(v.begin(), v.end());
for (int i = (int) v.size() - 1; i >= 0; i--) v[i] = make_pair(v[i].first - v[0].first, v[i].second - v[0].second);
return v;
}
vector < pair <int, int> > reflecty(vector < pair <int, int> > v)
{
for (int i = 0; i < (int) v.size(); i++) v[i] = make_pair(v[i].first, 4 - v[i].second);
sort(v.begin(), v.end());
for (int i = (int) v.size() - 1; i >= 0; i--) v[i] = make_pair(v[i].first - v[0].first, v[i].second - v[0].second);
return v;
}
void update(vector < pair <int, int> > v, bool s)
{
if (h.count(v)) return;
h[v] = s;
update(trans(v), s); update(reflectx(v), s); update(reflecty(v), s);
}
void makeTable()
{
pattern.clear(); pattern = { make_pair(0, 0), make_pair(0, 1), make_pair(0, 2), make_pair(0, 3) }; update(pattern, 0);
pattern.clear(); pattern = { make_pair(0, 0), make_pair(1, -2), make_pair(1, -1), make_pair(1, 0) }; update(pattern, 1);
pattern.clear(); pattern = { make_pair(0, 0), make_pair(1, -1), make_pair(1, 0), make_pair(1, 1) }; update(pattern, 1);
pattern.clear(); pattern = { make_pair(0, 0), make_pair(0, 1), make_pair(1, 0), make_pair(1, 1) }; update(pattern, 0);
pattern.clear(); pattern = { make_pair(0, 0), make_pair(1, 0), make_pair(1, 1), make_pair(2, 1) }; update(pattern, 1);
}
void solve()
{
for (int i = 0; i < 5; i++) scanf("%s", s[i]);
pattern.clear();
for (int i = 0; i < 5 && pattern.empty(); i++)
for (int j = 0; j < 5 && pattern.empty(); j++)
if (s[i][j] == 'o')
{
for (int pi = 0; pi < 5; pi++)
for (int pj = 0; pj < 5; pj++)
if (s[pi][pj] == 'o') pattern.push_back(make_pair(pi - i, pj - j));
}
sort(pattern.begin(), pattern.end());
if (!h.count(pattern)) { assert((int) pattern.size() < 4); x = Empty; update(pattern, dfs(0)); }
if (h[pattern]) puts("Far");
else puts("Away");
}
int main()
{
for (int i = 1; i < N; i++) bitcount[i] = bitcount[i >> 1] + (i & 1);
makeTable();
int T;
scanf("%d", &T);
for (caseID = 1; caseID <= T; caseID++) solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 107ms
memory: 353324kb
input:
200 ..... ..oo. ..... ..... ..... ..... ..... oo... o.... ..... ..... .o... oo... ..... ..... ..... ..... o.... oo... ..... ..... ...o. ..oo. ..... ..... ..... ....o ..... ..... ..... ..... ..... ..... .ooo. .o... ..... ..... ..... ..... ...oo .o... .o... .o... ..... ..... ..... ..... ..oo. ..... .....
output:
Far Away Away Away Away Away Far Far Away Far Away Far Far Away Far Away Far Away Away Away Far Away Far Away Away Away Away Far Far Far Far Away Far Away Far Away Far Away Away Far Away Away Far Far Away Far Far Away Far Away Away Away Away Away Away Far Away Far Away Away Away Away Far Away Far Fa...
result:
ok 200 lines
Test #2:
score: 0
Accepted
time: 19ms
memory: 134984kb
input:
200 ...oo ..oo. ..... ..... ..... ..... ..ooo ....o ..... ..... ..... o.... oo... .o... ..... ..... .ooo. ...o. ..... ..... ..... .oo.. ..oo. ..... ..... ..... ...o. ...o. ...o. ...o. ..... .oo.. ..o.. ..o.. ..... ..o.. ..ooo ..... ..... ..... ..... .oooo ..... ..... ..... ..... ..... o.... oo... o....
output:
Far Far Far Far Far Away Far Far Away Far Far Far Far Away Far Far Far Far Far Far Far Far Far Far Far Away Far Far Far Far Away Far Away Far Far Far Away Far Far Far Far Far Far Far Far Away Far Far Far Far Far Far Away Far Away Far Far Far Away Away Far Far Far Far Away Far Far Far Far Far Far Far...
result:
ok 200 lines