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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. /* constants */
  4. #define INF                         (int)1e9
  5. #define EPS                         1e-9
  6. /* hardware instructions */
  7. #define bitcount                    __builtin_popcount
  8. #define gcd                         __gcd
  9. /* loops, vector, pair */
  10. #define forall(i,a,b)               for (int i=a;i<b;i++)
  11. #define foreach(v, c)               for (typeof((c).begin())v = (c).begin(); v != (c).end(); v++)
  12. #define all(a)                      a.begin(), a.end()
  13. #define in(a,b)                     ( (b).find(a) != (b).end())
  14. #define pb                          push_back
  15. #define fill(a,v)                   memset(a, v, sizeof a)
  16. #define sz(a)                       ((int)(a.size()))
  17. #define mp                          make_pair
  18. /* common functions */
  19. #define Max(a,b)                    ( (a) > (b) ? (a) : (b))
  20. #define Min(a,b)                    ( (a) < (b) ? (a) : (b))
  21. #define checkbit(n,b)               ( (n >> b) & 1)
  22. #define DREP(a)                     sort(all(a)); a.erase(unique(all(a)),a.end())
  23. #define INDEX(arr,ind)              (lower_bound(all(arr),ind)-arr.begin())
  24. /* debug */
  25. #define DEBUG
  26. #ifndef DEBUG
  27.         #define debug(args...)     {dbg, args; cerr<<endl;}
  28.         #define dline               cout<<"------------"<<endl;
  29. #else
  30.         #define debug(args...)      // comment
  31.         #define dline               // comment
  32. #endif
  33. /* other */
  34. #define ll                          long long
  35. struct debugger {
  36. 	template<typename T> debugger& operator , (const T& v) {
  37. 		cerr<<v<<" ";
  38. 		return *this;
  39. 	}   
  40. } dbg;
  41. int str_to_int(string b) {
  42. 	int l = b.length();
  43. 	int s = 0;
  44. 	forall(i, 0, l) {
  45. 		s += (b[i]-'0')*pow(10, l-i-1);
  46. 	}
  47. 	return s;
  48. }
  49. int main()
  50. {
  51. 	char a, t, e;
  52. 	bool p,ifa;
  53. 	char d1[105], b1[105];
  54. 	scanf("%c%c", &a, &t);
  55. 	scanf("%[^e]", d1);
  56. 	cin>>e>>b1;
  57. 	string d(d1), b(b1);
  58. 	int B = str_to_int(b);
  59. 	p = false;
  60. 	ifa = false;
  61. 	int D = d.length();
  62. 	debug(b, d);
  63. 	debug(B, D);
  64. 	if (D != B) {
  65. 		if (B > D) {
  66. 			if (a != '0') {
  67. 				cout<<a;
  68. 				p = true;
  69. 			}
  70. 		} else {
  71. 			cout<<a;
  72. 			if ( a != '0')
  73. 				p = true;
  74. 		}
  75. 		forall(i, 0, D) {
  76. 			if (i == B)
  77. 				cout<<".";
  78. 			if (!p && d[i] != '0')
  79. 				p = true;
  80. 			if (p)
  81. 				cout<<d[i];
  82. 		}
  83. 		forall(i, D, B)
  84. 			cout<<0;
  85. 	} else {
  86. 		if (a != '0') {
  87. 			cout<<a;
  88. 			p = true;
  89. 		}
  90. 		forall(i, 0, D) {
  91. 			if (!p && d[i] != '0') {
  92. 				p = true;
  93. 			}
  94. 			if (p)	
  95. 				cout<<d[i];
  96. 		}
  97. 	}
  98. 	cout<<endl;
  99. 	return 0;
  100. }
Success #stdin #stdout 0s 3464KB
comments (?)
stdin
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7.0e100
stdout
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70000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
https://ideone.com/rSAuxb
Test case 17
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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