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  1. #include <iostream>
  2. #include <vector>
  3. #include<string>
  4. #include <algorithm>
  5. #include <cmath>
  6.  
  7. using namespace std;
  8. #define all(v) (v.begin()),(v.end())
  9.  
  10. void execute_query(string& input, string query){
  11.     if (query == "pop_back"){
  12.         input.pop_back();
  13.     }else if (query == "front"){
  14.         cout << input.front() << endl;
  15.     }else if (query == "back"){
  16.         cout << input.back() << endl;
  17.     }else if (query == "sort"){
  18.         int x,y;
  19.         cin >> x >> y;
  20.         x = abs(x);
  21.         y = abs(y);
  22.         x--;
  23.         sort(input.begin() + x, input.begin() + y);
  24.     }else if (query == "reverse"){
  25.         int x,y;
  26.         cin >> x >> y;
  27.         x = abs(x);
  28.         y = abs(y);
  29.         x--;
  30.         reverse(input.begin() + x, input.begin() + y);
  31.     }else if (query == "print"){
  32.         int i;
  33.         cin >> i;
  34.         cout << input[i] << endl;
  35.     }else if (query == "substr"){
  36.         int x,y;
  37.         cin >> x >> y;
  38.         x = abs(x);
  39.         y = abs(y);
  40.         x--;
  41.         cout << input.substr(x, y) << endl;
  42.     }else if (query == "push_back"){
  43.         char i;
  44.         cin >> i;
  45.         input.push_back(i);
  46.     }
  47. }
  48.  
  49. int main() {
  50.     int n, q;
  51.     string input;
  52.     cin >> n >> q >> input;
  53.     while (q--){
  54.         string query;
  55.         cin >> query;
  56.         execute_query(input, query);
  57.     }
  58.     return 0;
  59. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
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18 8
assiutinupperegypt
substr 1 6
sort 5 8
pop_back
back
reverse 1 6
front
push_back i
print 4
stdout
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assiut
p
n
s
https://ideone.com/6cWPqt
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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