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  1. #include <algorithm>
  2. #include <iostream>
  3. #include <cassert>
  4. #include <climits>
  5. #include <cstdlib>
  6. #include <cstring>
  7. #include <iomanip>
  8. #include <numeric>
  9. #include <cstdio>
  10. #include <string>
  11. #include <vector>
  12. #include <cmath>
  13. #include <ctime>
  14. #include <queue>
  15. #include <stack>
  16. #include <map>
  17. #include <set>
  18.  
  19. using namespace std;
  20.  
  21. #define F first
  22. #define S second
  23.  
  24. #define endl '\n'
  25.  
  26. #define mp make_pair
  27. #define pb push_back
  28.  
  29. #define FOR(i, a, b) for(int i = a; i <= b; i++)
  30. #define ROF(i, a, b) for(int i = a; i >= b; i--)
  31.  
  32. #define type(x) __typeof((x).begin())
  33. #define foreach(i, x) for(type(x) i = (x).begin(); i != (x).end(); i++)
  34.  
  35. #define sol (root + root)
  36. #define sag (root + root + 1)
  37. #define orta ((bas + son) >> 1)
  38.  
  39. #define bit __builtin_popcount
  40.  
  41. #ifndef D
  42.     #define dbg(x) 0
  43.     #define dbgs(x) 0
  44. #else
  45.     #define dbg(x) cerr << (#x) << " --> " << (x) << endl
  46.     #define dbgs(x) cerr << (#x) << " --> " << (x) << ' '
  47. #endif
  48.  
  49. typedef long long ll;
  50. typedef pair < int, int > pii;
  51.  
  52. const int inf = 1e9 + 5;
  53. const ll linf = 1e18 + 5;
  54.  
  55. const int N = 1000 + 5;
  56. const int K = 100000;
  57. const double PI = acos(-1);
  58.  
  59. int n;
  60. pair < pair < double, double >, int > a[N];
  61.  
  62. int main () {
  63.  
  64.     ios :: sync_with_stdio(0);
  65.  
  66. 	cin >> n;
  67.  
  68. 	int all = 0;
  69.  
  70. 	FOR(i, 1, n) {
  71. 		cin >> a[i].F.F >> a[i].F.S >> a[i].S;
  72. 		all += a[i].S;
  73. 	}
  74.  
  75. 	int ans = inf;
  76.  
  77. 	double x, y, c = cos(PI / K), s = sin(PI / K);
  78.  
  79. 	FOR(i, 1, K) {
  80. 		bool flag = 1;
  81. 		while(flag) {
  82. 			flag = 0;
  83. 			FOR(i, 1, n - 1)
  84. 				if(a[i].F.F > a[i + 1].F.F + (1e-6)) {
  85. 					flag = 1;
  86. 					swap(a[i], a[i + 1]);
  87. 				}
  88. 		}
  89. 		int sum = 0;
  90. 		FOR(i, 1, n) {
  91. 			sum += a[i].S;
  92. 			ans = min(ans, abs(all - sum - sum));
  93. 			x = a[i].F.F;
  94. 			y = a[i].F.S;
  95. 			a[i].F.F = x * c - y * s;
  96. 			a[i].F.S = x * s + y * c;
  97. 		}
  98. 	}
  99.  
  100. 	cout << ans << endl;
  101.  
  102.     return 0;
  103.  
  104. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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1000000005
https://ideone.com/YeLtmM
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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