fork download 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.   int n;
  6.   cin>>n;
  7.   vector<int> v(n),sorted(n);
  8.   deque<int>dq;
  9.   for(int i=0;i<n;i++){cin>>v[i];sorted[i]=v[i];}
  10.   sort(sorted.begin(),sorted.end());
  11.   for(int i=0;i<n;i++) {
  12.     if(v[i]!=sorted[i])dq.push_back(i);
  13.   }
  14.   if (dq.size() > 0) {
  15.     reverse((v.begin() + dq.front()), (v.begin() + dq.back() + 1));
  16.   }
  17.  bool flag=true;
  18.   for(int i=0;i<n;i++) {
  19.     if(v[i]!=sorted[i])flag=false;
  20.   }
  21.  
  22.   if(!flag)cout<<"no";
  23.   else {
  24.     cout<<"yes\n";
  25.     if(dq.size()>0) cout<<dq.front()+1<<" "<<dq.back()+1;
  26.     else cout<<1<<" "<<1;
  27.   }
  28.  
  29. }
  30.  
Success #stdin #stdout 0.01s 5300KB
comments (?)
stdin 
Standard input is empty
stdout 
yes
1 1
https://ideone.com/Kq6KV9
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!