#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll; typedef pair<int, int> pii;
#define pb emplace_back
#define AI(x) begin(x),end(x)
#define ff first
#define ss second
#ifdef OWO
#define debug(args...) LKJ("\033[1;32m[ " + string(#args) + " ]\033[0m", args)
template <class I> void LKJ(I&&x) { cerr << x << endl; }
template <class I, class...T> void LKJ(I&&x, T&&...t) { cerr << x << ", "; LKJ(t...); }
template <class I> void OI(I a, I b) { while (a != b) cerr << *a << " \n"[(a = next(a)) == b]; }
#else
#define debug(...) 0
#define OI(...) 0
#endif
namespace {
random_device rd;
mt19937 mt(rd());
const int kN = 2002;
int N, root, mem[kN][kN];
int queryLCA(int u, int v) {
assert(u != v);
if (mem[u][v] != -1) return mem[u][v];
return (mem[u][v] = Query(root, u, v));
}
void addEdge(int u, int v) {
if (u > v) swap(u, v);
debug("Add edge", u, v);
Bridge(u, v);
}
bool cmp(int u, int v) {
return queryLCA(u, v) == u;
}
void init(int N) {
::N = N;
for (int i = 0; i < N; ++i)
for (int j = 0; j < N; ++j)
mem[i][j] = -1;
}
void solve(int rt, vector<int> ids) {
debug(rt);
OI(AI(ids));
if (ids.empty()) return;
if (ids.size() == 1) {
addEdge(rt, ids[0]);
return;
}
int u = ids.back(); ids.pop_back();
map<int, vector<int>> mp;
vector<int> ps;
for (const int& v: ids) {
int lca = queryLCA(u, v);
if (lca == v and lca != u) ps.pb(lca);
else mp[lca].pb(v);
}
debug(u);
for (auto &[nrt, nids]: mp) {
debug(nrt);
OI(AI(nids));
}
sort(AI(ps));
ps.erase(unique(AI(ps)), end(ps));
sort(AI(ps), cmp);
debug("ps");
OI(AI(ps));
addEdge(rt, ps[0]);
addEdge(ps.back(), u);
for (int i = 1; i < ps.size(); ++i)
addEdge(ps[i - 1], ps[i]);
for (auto &[nrt, nids]: mp) {
//shuffle(AI(nids), mt);
solve(nrt, nids);
}
}
} // namespace
void Solve(int N) {
init(N);
vector<int> ids(N);
iota(AI(ids), 0);
//shuffle(AI(ids), mt);
root = ids.back();
ids.pop_back();
debug(root);
OI(AI(ids));
solve(root, ids);
/*
for (int u = 0; u < N - 1; ++u)
Bridge(u, u + 1);
*/
}
Compilation message
meetings.cpp: In function 'void {anonymous}::addEdge(int, int)':
meetings.cpp:15:20: warning: statement has no effect [-Wunused-value]
15 | #define debug(...) 0
| ^
meetings.cpp:34:2: note: in expansion of macro 'debug'
34 | debug("Add edge", u, v);
| ^~~~~
meetings.cpp: In function 'void {anonymous}::solve(int, std::vector<int>)':
meetings.cpp:15:20: warning: statement has no effect [-Wunused-value]
15 | #define debug(...) 0
| ^
meetings.cpp:50:2: note: in expansion of macro 'debug'
50 | debug(rt);
| ^~~~~
meetings.cpp:16:17: warning: statement has no effect [-Wunused-value]
16 | #define OI(...) 0
| ^
meetings.cpp:51:2: note: in expansion of macro 'OI'
51 | OI(AI(ids));
| ^~
meetings.cpp:15:20: warning: statement has no effect [-Wunused-value]
15 | #define debug(...) 0
| ^
meetings.cpp:67:2: note: in expansion of macro 'debug'
67 | debug(u);
| ^~~~~
meetings.cpp:15:20: warning: statement has no effect [-Wunused-value]
15 | #define debug(...) 0
| ^
meetings.cpp:69:3: note: in expansion of macro 'debug'
69 | debug(nrt);
| ^~~~~
meetings.cpp:16:17: warning: statement has no effect [-Wunused-value]
16 | #define OI(...) 0
| ^
meetings.cpp:70:3: note: in expansion of macro 'OI'
70 | OI(AI(nids));
| ^~
meetings.cpp:68:13: warning: unused structured binding declaration [-Wunused-variable]
68 | for (auto &[nrt, nids]: mp) {
| ^~~~~~~~~~~
meetings.cpp:15:20: warning: statement has no effect [-Wunused-value]
15 | #define debug(...) 0
| ^
meetings.cpp:76:2: note: in expansion of macro 'debug'
76 | debug("ps");
| ^~~~~
meetings.cpp:16:17: warning: statement has no effect [-Wunused-value]
16 | #define OI(...) 0
| ^
meetings.cpp:77:2: note: in expansion of macro 'OI'
77 | OI(AI(ps));
| ^~
meetings.cpp:81:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
81 | for (int i = 1; i < ps.size(); ++i)
| ~~^~~~~~~~~~~
meetings.cpp: In function 'void Solve(int)':
meetings.cpp:15:20: warning: statement has no effect [-Wunused-value]
15 | #define debug(...) 0
| ^
meetings.cpp:102:2: note: in expansion of macro 'debug'
102 | debug(root);
| ^~~~~
meetings.cpp:16:17: warning: statement has no effect [-Wunused-value]
16 | #define OI(...) 0
| ^
meetings.cpp:103:2: note: in expansion of macro 'OI'
103 | OI(AI(ids));
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
328 KB |
Output is correct |
| 2 |
Correct |
1 ms |
328 KB |
Output is correct |
| 3 |
Runtime error |
1 ms |
456 KB |
Execution killed with signal 11 |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
328 KB |
Output is correct |
| 2 |
Correct |
1 ms |
328 KB |
Output is correct |
| 3 |
Runtime error |
1 ms |
456 KB |
Execution killed with signal 11 |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
328 KB |
Output is correct |
| 2 |
Correct |
1 ms |
328 KB |
Output is correct |
| 3 |
Runtime error |
1 ms |
456 KB |
Execution killed with signal 11 |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
112 ms |
32584 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
