#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
#define ll long long
#define pb push_back
#define sz(x) (int)(x).size()
#define mp make_pair
#define f first
#define s second
#define all(x) x.begin(), x.end()
#define D(x) cerr << #x << " is " << (x) << "\n";
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
template<class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>; ///find_by_order(),order_of_key()
template<class T1, class T2> ostream& operator<<(ostream& os, const pair<T1,T2>& a) { os << '{' << a.f << ", " << a.s << '}'; return os; }
template<class T> ostream& operator<<(ostream& os, const vector<T>& a){os << '{';for(int i=0;i<sz(a);i++){if(i>0&&i<sz(a))os << ", ";os << a[i];}os<<'}';return os;}
template<class T> ostream& operator<<(ostream& os, const set<T>& a) {os << '{';int i=0;for(auto p:a){if(i>0&&i<sz(a))os << ", ";os << p;i++;}os << '}';return os;}
template<class T> ostream& operator<<(ostream& os, const multiset<T>& a) {os << '{';int i=0;for(auto p:a){if(i>0&&i<sz(a))os << ", ";os << p;i++;}os << '}';return os;}
template<class T1,class T2> ostream& operator<<(ostream& os, const map<T1,T2>& a) {os << '{';int i=0;for(auto p:a){if(i>0&&i<sz(a))os << ", ";os << p;i++;}os << '}';return os;}
//3:20
const int N=1e5+5;
struct node{
int l,r,sum;
node(){l=-1;r=-1;sum=0;}
};
struct segTree{
vector<node> drvo;
vector<int> roots;
vector<int> cnt;
int newNode()
{
node a;
drvo.pb(a);
return drvo.size()-1;
}
int copyNode(int i)
{
drvo.pb(drvo[i]);
return drvo.size()-1;
}
void build(int l=0,int r=N-1,int tr=0)
{
if(l==r)
return;
int m=(l+r)>>1,a=newNode();
drvo[tr].l=a;
a=newNode();
drvo[tr].r=a;
build(l,m,drvo[tr].l);
build(m+1,r,drvo[tr].r);
}
void init()
{
int a=newNode();
roots.pb(a);
build();
}
void undo()
{
for(int i=0;i<cnt.back();i++)
drvo.pop_back();
cnt.pop_back();
roots.pop_back();
}
int get(int qs,int qe)
{
return gett(qs,qe,roots.back());
}
int gett(int qs,int qe,int tr,int l=0,int r=N-1)
{
if(qs>r||qe<l||drvo[tr].sum==0)
return 0;
if(qs<=l&&qe>=r)
return drvo[tr].sum;
int m=(l+r)>>1;
return gett(qs,qe,drvo[tr].l,l,m)+gett(qs,qe,drvo[tr].r,m+1,r);
}
void postavi(int qs,int qe)
{
cnt.pb(0);
int a=sett(qs,qe,roots.back());
roots.pb(a);
}
int sett(int qs,int qe,int tr,int l=0,int r=N-1)
{
if(qs>r||qe<l||drvo[tr].sum==0)
return tr;
int nov=copyNode(tr);
cnt.back()++;
if(qs<=l&&qe>=r)
{
drvo[nov].sum=0;
return nov;
}
int m=(l+r)>>1;
int a=sett(qs,qe,drvo[tr].l,l,m);
drvo[nov].l=a;
a=sett(qs,qe,drvo[tr].r,m+1,r);
drvo[nov].r=a;
drvo[nov].sum=drvo[drvo[nov].l].sum+drvo[drvo[nov].r].sum;
return nov;
}
void add(int pos,int tr=0,int l=0,int r=N-1)
{
if(l>pos||r<pos)
return;
if(l==r)
{
drvo[tr].sum++;
return;
}
int m=(l+r)>>1;
add(pos,drvo[tr].l,l,m);
add(pos,drvo[tr].r,m+1,r);
drvo[tr].sum=drvo[drvo[tr].l].sum+drvo[drvo[tr].r].sum;
}
} num[10];
string no=".",sol=".";
int n,lim=1e7;
void build(int first,int interval,string tr,int ostalo)
{
if(sol!=no&&tr.size()>sol.size())
if(tr.size()>15)
return;
if(ostalo==0)
{
if(sol==".")
sol=tr;
else
{
if(tr.size()<sol.size())
sol=tr;
if(tr.size()==sol.size())
sol=min(sol,tr);
}
return;
}
if(first==n)
{
int cnt=0;
for(int i=9;i>=0;i--)
{
int br=num[i].get(0,n-1);
if(br)
{
cnt++;
char trr='0'+i;
tr=trr+tr;
if(i==0&&cnt>1)
swap(tr[0],tr[1]);
}
}
if(tr[0]=='0')
tr="1"+tr;
if(sol==".")
sol=tr;
else
{
if(tr.size()<sol.size())
sol=tr;
if(tr.size()==sol.size())
sol=min(sol,tr);
}
return;
}
for(int i=0;i<=9;i++)
{
vector<int> cnt;
int uzeo=0;
if(first!=0)
{
int tr=num[i].get(0,first-1);
uzeo+=tr;
if(tr)
num[i].postavi(0,first-1),cnt.pb(i);
}
int l=first,r=first+interval-1,j=(i+1)%10;
while(l<n)
{
int tr=num[j].get(l,min(r,n-1));
uzeo+=tr;
if(tr)
num[j].postavi(l,min(r,n-1)),cnt.pb(j);
l+=interval;
r+=interval;
j=(j+1)%10;
}
if(cnt.empty())
continue;
char trr='0'+i;
build(min(n,first+interval*(9-i)),min(lim,interval*10),trr+tr,ostalo-uzeo);
for(auto p:cnt)
num[p].undo();
}
}
int main()
{
//freopen("in.txt","r",stdin);
for(int i=0;i<10;i++)
num[i].init();
scanf("%i",&n);
for(int i=0;i<n;i++)
{
int a;
scanf("%i",&a);
num[a].add(i);
}
build(1,1,"",n);
cout << sol << endl;
return 0;
}
Compilation message
sequence.cpp: In function 'int main()':
sequence.cpp:209:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i",&n);
~~~~~^~~~~~~~~
sequence.cpp:213:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i",&a);
~~~~~^~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
51 ms |
26048 KB |
Output is correct |
| 2 |
Incorrect |
74 ms |
26176 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
52 ms |
26048 KB |
Output is correct |
| 2 |
Incorrect |
76 ms |
26052 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
53 ms |
26052 KB |
Output is correct |
| 2 |
Correct |
126 ms |
26116 KB |
Output is correct |
| 3 |
Correct |
128 ms |
26016 KB |
Output is correct |
| 4 |
Incorrect |
122 ms |
26048 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
53 ms |
26064 KB |
Output is correct |
| 2 |
Incorrect |
74 ms |
26148 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
