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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5.  
  6.     int n,m;
  7.  
  8.     char x,y;
  9.  
  10.     int magic[30];   //It is an array where magic happens
  11.  
  12.     string str;
  13.  
  14.     cin>>n>>m;
  15.  
  16.     cin>>str;
  17.  
  18.     for(int i=0;i<26;++i){  // magic[0] means value of 'a' and so on
  19.  
  20.          magic[i]=i;
  21.  
  22.     }
  23.  
  24.  
  25.  
  26.     for(int i=1;i<=m;++i){
  27.  
  28.         cin>>x>>y;
  29.  
  30.         int posa,posb;
  31.  
  32.         for(int j=0;j<26;++j){    //search for the value which corresponds to x  and search for value which corresponds to y
  33.  
  34.              if(magic[j]==x-'a'){
  35.                  posa=j;
  36.              }   
  37.  
  38.              if(magic[j]==y-'a'){
  39.                  posb=j; 
  40.              }       
  41.         }
  42.  
  43.         magic[posa]=y-'a';   //if 'a' is replaced by 'b' by one of the persons then magic[0] will keep 1(the value of 'b')
  44.  
  45.         magic[posb]=x-'a';  //and magic[1] will contain 0(the value of 'a')
  46.  
  47.     }
  48.  
  49.  
  50.    // magic array contains final values of each character
  51.  
  52.  
  53.     int len=str.size();
  54.  
  55.     for(int i=0;i<len;++i){
  56.  
  57.          str[i]=magic[str[i]-'a']+'a';
  58.  
  59.     }
  60.  
  61.     cout<<str<<'\n';
  62.  
  63.     return 0;
  64.  
  65. }
Runtime error #stdin #stdout 0s 2684KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/ExXh8H
language:
C++ 4.3.2 (gcc-4.3.2)
created:
8 years ago
visibility:
public

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