fork download
copy 
  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. // 4 9
  29. // 2 7 11 15 
  30.  
  31. vector<int> a;
  32.  
  33. vector<int> consistency(int n, int k){
  34.  
  35. 	unordered_map<int, int> mp;
  36. 	for(int i=0; i<n; i++){
  37. 		if(mp.count(k-a[i])){
  38. 			int j = mp[k-a[i]];
  39.  
  40. 			return {j, i};
  41. 		}
  42. 		mp[a[i]] = i;
  43. 	}
  44. 	return {-1, -1};
  45. }
  46.  
  47.  
  48.  
  49.  
  50.  
  51.  
  52.  
  53.  
  54.  
  55.  
  56.  
  57.  
  58.  
  59.  
  60.  
  61. vector<int> practice(int n, int k){
  62.  
  63.  
  64. }
  65.  
  66.  
  67.  
  68.  
  69.  
  70. void solve() {
  71.  
  72.     int n, k;
  73.     cin>> n >> k;
  74.  
  75.     a.resize(n);
  76.     for(int i=0; i<n; i++) cin >> a[i];
  77.  
  78.     auto ans = consistency(n, k);
  79.  
  80.     cout << ans[0] << " " << ans[1] << endl;
  81.  
  82.  
  83. }
  84.  
  85.  
  86.  
  87.  
  88.  
  89. int32_t main() {
  90.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  91.  
  92.     int t = 1;
  93.     // cin >> t;
  94.     while (t--) {
  95.         solve();
  96.     }
  97.  
  98.     return 0;
  99. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
copy 
4 9
2 7 11 15
stdout
copy 
0 1
https://ideone.com/0fBKzL
language:
C++14 (gcc 8.3)
created:
1 hour ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!