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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. inline int power(int a, int b) {
  7.     int x = 1;
  8.     while (b) {
  9.         if (b & 1) x *= a;
  10.         a *= a;
  11.         b >>= 1;
  12.     }
  13.     return x;
  14. }
  15.  
  16.  
  17. const int M = 1000000007;
  18. const int N = 3e5+9;
  19. const int INF = 2e9+1;
  20. const int LINF = 2000000000000000001;
  21.  
  22. //_ ***************************** START Below *******************************
  23.  
  24. vector<int> a;
  25.  
  26. bool isPossible(int n, int k, int mid){
  27. 	int sum = 0;
  28. 	int ct = 1;
  29. 	for(int i=0; i<n; i++){
  30. 		if(a[i] > mid) return false;
  31. 		if(sum+a[i] <= mid){
  32. 			sum += a[i];
  33. 		}
  34. 		else{
  35. 			sum = a[i];
  36. 			ct++;
  37. 		}
  38. 	}
  39. 	return ct <= k;
  40. }
  41.  
  42. void consistency(int n, int k){
  43.  
  44. 	int s = 1, e = INF;
  45. 	while(s<e){
  46. 		int mid = s + (e-s)/2;
  47. 		if(isPossible(n, k, mid)){
  48. 			e = mid;
  49. 		}
  50. 		else s = mid+1;
  51. 	}
  52.  
  53. 	cout << e << endl;
  54.  
  55. }
  56.  
  57. void solve() {
  58.  
  59.     int n, k;
  60.     cin>>n >> k;
  61.  
  62.     a.resize(n);
  63.     for(int i=0; i<n; i++) cin >> a[i];
  64.  
  65.     consistency(n, k);
  66.  
  67.  
  68. }
  69.  
  70.  
  71.  
  72.  
  73.  
  74. int32_t main() {
  75.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  76.  
  77.     int t = 1;
  78.     cin >> t;
  79.     while (t--) {
  80.         solve();
  81.     }
  82.  
  83.     return 0;
  84. }
Success #stdin #stdout 0s 5320KB
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https://ideone.com/RkmjhT
language:
C++14 (gcc 8.3)
created:
12 hours ago
visibility:
public

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