#include <bits/stdc++.h>
using namespace std;
#define ll int
#define pll pair<ll,ll>
#define ff first
#define ss second
#define pb push_back
//#define endl "\n"
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
const ll maxn=1e5+50;
const ll mod=1e9+7 ;
const ll base=1e18;
#include "meetings.h"
/// i believe myself
/// goal 1/7
/*ll Query(ll l,ll r,ll t)
{
cout <<l<<" "<<r<<" "<<t<<endl;
ll x;
cin>> x;
return x;
}
void Bridge(ll x,ll y)
{
cout <<"! "<<x<<" "<<y<<endl;
}*/
long long rd(long long l,long long r)
{
return abs((long long)rnd())%(r-l+1)+l;
}
vector<ll> gr[maxn];
ll st;
vector<ll> dosth1(vector<ll> vt)
{
if (vt.size()==1)
return vt;
vector<ll> vt1;
vector<ll> vt2;
ll len=vt.size()/2;
for (int i=0; i<len; i++)
vt1.pb(vt[i]);
for (int i=len; i<vt.size(); i++)
vt2.pb(vt[i]);
vt1=dosth1(vt1);
vt2=dosth1(vt2);
ll id1=0;
ll id2=0;
vector<ll> res;
while (id1<vt1.size()&&id2<vt2.size())
{
if (Query(st,vt1[id1],vt2[id2])==vt1[id1])
res.pb(vt1[id1]),id1++;
else
res.pb(vt2[id2]),id2++;
}
while (id1<vt1.size())
{
res.pb(vt1[id1]),id1++;
}
while (id2<vt2.size())
{
res.pb(vt2[id2]),id2++;
}
return res;
}
void bridge(ll x,ll y)
{
if (x>y)
swap(x,y);
Bridge(x,y);
}
void dosth(vector<ll> vt)
{
if (vt.size()<=1)
return ;
if (vt.size()==2)
{
bridge(vt[0],vt[1]);
return ;
}
// cout <<vt.size()<<" wtf"<<endl;
ll n=vt.size();
ll l=rd(0,n-1);
ll r=rd(0,n-1);
while (r==l)
r=rd(0,n-1);
l=vt[l];
r=vt[r];
vector<ll> vt1;
st=l ;
for (auto to:vt)
{
if (to==l||to==r)
continue;
ll h=Query(l,r,to);
if (h==to)
{
vt1.pb(to);
}
else
{
gr[h].pb(to);
}
}
vt1=dosth1(vt1);
for (int i=0; i<vt1.size(); i++)
{
if (i==0)
bridge(vt1[i],st);
else
bridge(vt1[i],vt1[i-1]);
}
if (vt1.size())
bridge(vt1.back(),r);
else
bridge(l,r);
for (auto to:vt1)
{
if (gr[to].size())
{
vector<ll> vt2=gr[to];
vt2.pb(to);
gr[to].clear();
dosth(vt2);
}
}
}
void Solve(ll n)
{
vector<ll> vt;
for (int i=0; i<=n-1; i++)
vt.pb(i);
dosth(vt);
}
/*int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
if (fopen("t.inp", "r"))
{
freopen("test.inp", "r", stdin);
freopen("test.out", "w", stdout);
}
Solve(5);
}*/
/*5
0 1 1
0 2 4
0 3 3
2 4 2
*/
Compilation message
meetings.cpp:14:15: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
14 | const ll base=1e18;
| ^~~~
meetings.cpp: In function 'std::vector<int> dosth1(std::vector<int>)':
meetings.cpp:46:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
46 | for (int i=len; i<vt.size(); i++)
| ~^~~~~~~~~~
meetings.cpp:53:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
53 | while (id1<vt1.size()&&id2<vt2.size())
| ~~~^~~~~~~~~~~
meetings.cpp:53:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
53 | while (id1<vt1.size()&&id2<vt2.size())
| ~~~^~~~~~~~~~~
meetings.cpp:60:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
60 | while (id1<vt1.size())
| ~~~^~~~~~~~~~~
meetings.cpp:64:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
64 | while (id2<vt2.size())
| ~~~^~~~~~~~~~~
meetings.cpp: In function 'void dosth(std::vector<int>)':
meetings.cpp:110:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
110 | for (int i=0; i<vt1.size(); i++)
| ~^~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
162 ms |
262144 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
162 ms |
262144 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
162 ms |
262144 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
238 ms |
262144 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
