This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "grader.h"
#include<bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<long long,null_type,less_equal<long long>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;
#pragma GCC optimize("Ofast")
//#pragma GCC target("avx2")
//order_of_key #of elements less than x
// find_by_order kth element
using ll=long long;
using ld=long double;
using pii=pair<int,int>;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()),c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
const ll maxn=5e5+5;
const ll maxlg=__lg(maxn)+2;
const ll INF64=4e18;
const int INF=0x3f3f3f3f;
const int MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-6;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
template<typename T1,typename T2>
ostream& operator<<(ostream& out,pair<T1,T2> P){
out<<P.f<<' '<<P.s;
return out;
}
template<typename T>
ostream& operator<<(ostream& out,vector<T> V){
REP(i,sz(V)) out<<V[i]<<((i!=sz(V)-1)?"\n":"");
return out;
}
vector<int> findSequence (int n){
int half=n/2+1;
vector<int> v;
int x=0,y=1;
int cx=0,cy=0;
REP(i,half){
v.pb(x);
if(!isSubsequence(v)){
break;
}
++cx;
}
v.clear();
REP(i,half){
v.pb(y);
if(!isSubsequence(v)){
break;
}
++cy;
}
if(cx>cy){
swap(x,y),swap(cx,cy);
}
cy=n-cx;
//cout<<x<<' '<<y<<' '<<cx<<' '<<cy<<'\n';
int px=0,py=0;
vector<int> ans;
REP(i,n){
if(sz(ans) and ans.back()==y){
if(px+cy-py<n/2){
vector<int> vv;
REP(i,px+1) vv.pb(x);
REP(i,cy-py) vv.pb(y);
if(!isSubsequence(vv)) ans.pb(y);
else ans.pb(x);
}
else{
vector<int> vv;
REP(i,py+1) vv.pb(x);
REP(i,cx-px) vv.pb(y);
if(isSubsequence(vv)) ans.pb(y);
else ans.pb(x);
}
}
else{
vector<int> vv;
REP(i,px) vv.pb(x);
vv.pb(y);
REP(i,cx-px) vv.pb(x);
if(isSubsequence(vv)) ans.pb(y);
else ans.pb(x);
}
if(ans.back()==x) ++px;
else ++py;
}
return ans;
}
Compilation message (stderr)
grader.cpp: In function 'int main()':
grader.cpp:28:26: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
28 | fprintf (fifo_out, "%d\n", ans.size ());
| ~^ ~~~~~~~~~~~
| | |
| int std::vector<int>::size_type {aka long unsigned int}
| %ld
grader.cpp:29:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
29 | for (int i=0; i<ans.size () && i < N; i++)
| ~^~~~~~~~~~~~
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