#include<iostream>
#include<bits/stdc++.h>
#define MAXN 1000010
using namespace std;
int ind[MAXN];
vector<pair<int,int>> order;
string s;
char getans(int pos)
{
//int ans=pos;
for(int i=0;i<(int)order.size();i++)
{
int l=order[i].first;
int r=order[i].second;
if(l<=pos && pos<=r)
{
order[i]={0,0};//could use -erase-
/*if(r-l+1>1)
{
order.push_back({l,max(pos-1,l)});
order.push_back({min(pos+1,r),r});
}
ans++;*/
for(int j=l;j<=r;j++)
{
ind[j-1]=ind[j];
}
ind[r]=l-1;
}
else if(r<=pos && pos<=l)
{
order[i]={0,0};
for(int j=l;j>=r;j--)
{
ind[j+1]=ind[j];
}
ind[r]=l+1;
}
}
return s[ind[pos]-1];
}
int main()
{
int n,q;
ios_base::sync_with_stdio(false);
cin.tie(0);
cin>>n>>q;
cin>>s;
for(int i=0;i<(int)s.size();i++)
{
ind[i+1]=i+1;
}//could be skipped
for(int i=0;i<q;i++)
{
char t;
cin>>t;
if(t=='a')
{
int ql,qr;
cin>>ql>>qr;
if(ql+1<=qr)order.push_back({ql+1,qr});
else if(qr<=ql-1)order.push_back({ql-1,qr});
}
else
{
int pos;
cin>>pos;
cout<<getans(pos)<<"\n";
}
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
