#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
const int buc = 1000;
int n,m;
int cntv=1;
vector<char> v[1100];
pair<int,int> get_poz(int a)
{
int cntp=0;
for(int i=1;i<=cntv;i++)
{
if(cntp+(int)v[i].size()>=a)
{
return {i,a-cntp-1};
}
cntp += (int)v[i].size();
}
while(1)
n=0;
return {-1,-1};
}
signed main()
{
ios_base::sync_with_stdio(0);cin.tie(0);
cin>>n>>m;
char ch;
for(int i=1;i<=n;i++)
{
cin>>ch;
if(i%buc==0)
cntv++;
v[cntv].push_back(ch);
}
int a,b;
while(m--)
{
cin>>ch;
if(ch=='q')
{
cin>>a;
pair<int,int> unde = get_poz(a);
cout<<v[unde.first][unde.second]<<"\n";
}
else
{
cin>>a>>b;
if(a==b)
continue;
pair<int,int> undea = get_poz(a);
pair<int,int> undeb = get_poz(b);
if(undea.first!=undeb.first || undea.second > undeb.second)
{
char cop = v[undea.first][undea.second];
v[undea.first].erase(v[undea.first].begin()+undea.second);
v[undeb.first].insert(v[undeb.first].begin()+undeb.second, cop);
}
else
{
char cop = v[undea.first][undea.second];
v[undeb.first].insert(v[undeb.first].begin()+undeb.second, cop);
v[undea.first].erase(v[undea.first].begin()+undea.second);
}
}
}
return 0;
}
/**
xzxyyzxxzxyyzyx
xzxyyzxxzxyyzyx
123456789
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
