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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#574355 | #9319. Bull Farm | MaxDYF | WA | 23ms | 3836kb | C++23 | 3.9kb | 2024-09-18 21:43:20 | 2024-09-18 21:43:20 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int inf = 1e9;
struct DSU
{
vector<int> f;
DSU(int n)
{
f.resize(n + 1);
for (int i = 0; i <= n; i++)
f[i] = i;
}
int find(int x)
{
return f[x] != x ? f[x] = find(f[x]) : x;
}
void merge(int x, int y)
{
if (find(x) != find(y))
f[find(x)] = y;
}
};
struct Graph
{
vector<vector<pair<int, int>>> G;
int n;
struct Subgraph
{
vector<int> dis;
vector<vector<pair<int, int>>> &G;
int n;
Subgraph(int n, vector<vector<pair<int, int>>> &G) : n(n), G(G)
{
dis = vector<int>(n + 1, inf);
}
void getPath(int x)
{
dis[x] = 0;
vector<int> vis(n + 1);
priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> q;
for (int i = 1; i <= n; i++)
if (dis[i] != inf)
q.push({dis[i], i});
while (q.empty() == false)
{
auto [d, x] = q.top();
q.pop();
if (vis[x])
continue;
vis[x] = 1;
for (auto [y, c] : G[x])
{
if (dis[y] > max(dis[x], c))
{
dis[y] = max(dis[x], c);
q.push({dis[y], y});
}
}
}
}
};
vector<Subgraph> g;
Graph(int n) : n(n)
{
G = vector<vector<pair<int, int>>>(n + 1);
g = vector<Subgraph>(n + 1, Subgraph(n, G));
}
void add(int x, int y, int c)
{
if (x == y)
return;
G[x].push_back({y, c});
}
void getPath()
{
for (int i = 1; i <= n; i++)
g[i].getPath(i);
}
void link(int x, int y, int c)
{
g[x].dis[y] = min(g[x].dis[y], c);
g[y].dis[x] = min(g[y].dis[x], c);
}
int query(int x, int y)
{
return g[x].dis[y];
}
};
void work()
{
int n, l, q;
cin >> n >> l >> q;
DSU dsu(n);
Graph g(n);
auto decode = [&](char ch1, char ch2)
{
int x = (int)(ch1 - '0') * 50 + (int)(ch2 - '0');
return x;
};
for (int c = 1; c <= l; c++)
{
vector<int> t(n + 1), in(n + 1);
for (int j = 1; j <= n; j++)
{
char ch1, ch2;
cin >> ch1 >> ch2;
t[j] = decode(ch1, ch2);
in[t[j]]++;
}
int in1 = 0, in2 = 0, in2x = 0, in0x = 0;
bool flag = 1;
for (int i = 1; i <= n; i++)
{
if (in[i] > 2)
{
flag = 0;
break;
}
if (in[i] == 1)
in1++;
else if (in[i] == 2)
in2++, in2x = i;
else if (in[i] == 0)
in0x = i;
}
if (flag == 0)
continue;
if (in1 == n)
{
vector<int> vis(n + 1);
for (int i = 1; i <= n; i++)
{
int x = i, lst = 0;
if (!vis[x])
{
vector<int> proc;
while (!vis[x])
{
vis[x] = 1;
if (lst == 0 || dsu.find(lst) != dsu.find(x))
{
proc.push_back(x);
if (lst)
dsu.merge(lst, x);
}
lst = x;
x = t[x];
}
for (int i = 0; i < proc.size(); i++)
for (int j = i + 1; j < proc.size(); j++)
g.link(proc[i], proc[j], c);
}
}
}
else if (in1 == n - 2 && in2 == 1)
{
vector<int> vis(n + 1);
for (int i = 1; i <= n; i++)
if (t[i] == in2x)
g.add(i, in0x, c);
int x = in0x;
while (!vis[x])
{
vis[x] = 1;
x = t[x];
}
for (int i = 1; i <= n; i++)
{
int x = i, lst = 0;
if (!vis[x])
{
vector<int> proc;
while (!vis[x])
{
vis[x] = 1;
if (lst == 0 || dsu.find(lst) != dsu.find(x))
{
proc.push_back(x);
if (lst)
dsu.merge(lst, x);
}
lst = x;
x = t[x];
}
for (int i = 0; i < proc.size(); i++)
for (int j = i + 1; j < proc.size(); j++)
g.link(proc[i], proc[j], c);
}
}
}
else
continue;
}
g.getPath();
for (int i = 1; i <= q; i++)
{
char ch[7];
cin >> ch;
int a = decode(ch[0], ch[1]), b = decode(ch[2], ch[3]), c = decode(ch[4], ch[5]);
cout << (g.query(a, b) <= c ? '1' : '0');
}
cout << '\n';
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
int t;
cin >> t;
while (t--)
work();
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3796kb
input:
2 5 2 4 0305040201 0404040404 030300 020500 050102 020501 6 2 4 030603010601 010203060504 030202 060402 050602 060401
output:
1011 0100
result:
ok 2 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 3836kb
input:
1 3 3 6 020202 030301 030201 020102 030203 010201 010303 020303 010202
output:
010101
result:
ok single line: '010101'
Test #3:
score: -100
Wrong Answer
time: 23ms
memory: 3644kb
input:
200 10 10 5000 01060:04020305080709 0103070:060204050908 09070503080401060:02 050308010204090:0607 03010502040607080:09 03080109020504060:07 06050:09040302080107 07080305010409060:02 030809010:0204060507 0:060908070201050304 060700 090:03 09080: 070405 010703 0:0100 080601 030600 070206 0:0:09 08040...
output:
010000001101101111101010001101100000001111110101001110100100001011010101110111000011000100110111110100001001100011110101110101111011001010100100011110010111000000000111111010011111101001111010101010001111010111001111111100111010100111001001010100000110011011100000100100100110001010100001011101101110...
result:
wrong answer 1st lines differ - expected: '011110001101101111111111111111...1111111111111111101111111111111', found: '010000001101101111101010001101...1111111111111101001111011011101'