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  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4.  
  5. string Cong(string a, string b)
  6. {
  7.     int len = max(a.length(), b.length());
  8.     while (a.length()<len)
  9.         a="0"+a;
  10.     while (b.length()<len)
  11.         b="0"+b;
  12.     /*
  13.     a = 123
  14.     b = 4567
  15.     ->
  16.     a = 0123
  17.     b = 4567
  18.     */
  19.     string rs = "";
  20.     int remember = 0;
  21.     for (int i=len-1; i>=0; i--)
  22.     {
  23.         int n1 = a[i]-'0';
  24.         int n2 = b[i]-'0';
  25.         int s = n1+n2+remember;
  26.  
  27.         char rs_tmp = s%10 + '0';
  28.         rs = rs_tmp + rs;
  29.         remember = s/10;
  30.     }
  31.     if (remember!=0)
  32.         return char(remember+'0')+rs;
  33.     return rs;
  34. }
  35.  
  36. string luythua(string x, int n, int d)
  37. {
  38.     if (n==0) return "1";
  39.     else if (n==1) return x;
  40.     string rs = x;
  41.     for (int i=2; i<=n; i++)
  42.     {
  43.         string rs_tmp = rs;
  44.         for (int j=2; j<=d; j++)
  45.         {
  46.             rs = Cong(rs, rs_tmp);  //2^3 = ((2)*2)*2
  47.         }
  48.     }
  49.     return rs;
  50. }
  51.  
  52. int main()
  53. {
  54.     int n, m;
  55.     cin>>n>>m;
  56.     string lt2 = luythua("2", n, 2);
  57.     string lt3 = luythua("3", m, 3);
  58.  
  59.     string S = Cong(lt2, lt3);
  60.  
  61.     cout<<S[0];
  62. 	return 0;
  63. }
Success #stdin #stdout 0s 4356KB
comments (?)
stdin 
4 2
stdout 
2
https://ideone.com/fYJSFb
v- BCPOW - Lũy thừa
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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