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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int              long long int
  4. #define double           long double
  5. #define print(a)         for(auto x : a) cout << x << " "; cout << endl
  6.  
  7.  
  8. const int M = 1000000007;
  9. const int N = 3e5+9;
  10. const int INF = 2e9+1;
  11. const int LINF = 2000000000000000001;
  12.  
  13. inline int power(int a, int b, int mod=M) {
  14.     int x = 1;
  15.     a %= mod;
  16.     while (b) {
  17.         if (b & 1) x = (x * a) % mod; 
  18.         a = (a * a) % mod;
  19.         b >>= 1;
  20.     }
  21.     return x;
  22. }
  23.  
  24.  
  25. //_ ***************************** START Below *******************************
  26.  
  27.  
  28. // 2
  29. // 1 8
  30. // 2 5
  31. // -1 8
  32. // -1 -1
  33. // -1 -1
  34.  
  35.  
  36.  
  37.  
  38. vector<int> a, b, c, d, e;
  39.  
  40. int consistency(int n){
  41.  
  42. 	unordered_map<int,int> mp;
  43.  
  44. 	for(int i=0; i<n; i++){
  45. 		for(int j=0; j<n; j++){
  46. 			int sum = c[i]+d[j];
  47. 			mp[sum]++;
  48. 		}
  49. 	}
  50.  
  51. 	int ans = 0;
  52. 	for(int i=0; i<n; i++){
  53. 		for(int j=0; j<n; j++){
  54. 			for(int k=0; k<n; k++){
  55. 				int sum = a[i]+b[j]+c[k];
  56. 				ans += mp[-sum];
  57. 			}
  58. 		}
  59. 	}
  60.  
  61. 	return ans;
  62.  
  63. }
  64.  
  65.  
  66.  
  67.  
  68.  
  69.  
  70.  
  71.  
  72.  
  73.  
  74.  
  75.  
  76.  
  77.  
  78.  
  79. int practice(int n){
  80.  
  81.  
  82.     return 0;
  83. }
  84.  
  85.  
  86.  
  87.  
  88.  
  89. void solve() {
  90.  
  91.     int n;
  92.     cin>> n;
  93.  
  94.     a.resize(n);
  95.     b.resize(n);
  96.     c.resize(n);
  97.     d.resize(n);
  98.     e.resize(n);
  99.     for(int i=0; i<n; i++) cin >> a[i];
  100.     for(int i=0; i<n; i++) cin >> b[i];
  101.     for(int i=0; i<n; i++) cin >> c[i];
  102.     for(int i=0; i<n; i++) cin >> d[i];
  103.     for(int i=0; i<n; i++) cin >> e[i];
  104.  
  105.     cout << consistency(n) << endl;
  106.  
  107.  
  108. }
  109.  
  110.  
  111.  
  112.  
  113.  
  114. int32_t main() {
  115.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  116.  
  117.     int t = 1;
  118.     // cin >> t;
  119.     while (t--) {
  120.         solve();
  121.     }
  122.  
  123.     return 0;
  124. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
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2
1 8
2 5
-1 8
-1 -1
-1 -1
stdout
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2
https://ideone.com/sttUgI
language:
C++14 (gcc 8.3)
created:
1 hour ago
visibility:
public

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