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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4. #define pb push_back
  5. #define yes cout<<"YES\n";
  6. #define no cout<<"NO\n";
  7. const int N=3e5+7;
  8. ll T = 1, a[N], b[N];
  9. void solve()
  10. {
  11.     ll n, m;
  12.  
  13.     cin >> n >> m;
  14.  
  15.     for(int i = 1; i <= n; i++)
  16.         cin >> a[i];
  17.  
  18.     ll ans = 0, l = 1;
  19.     ll sum = 0;
  20.  
  21.     for(int r = 1; r <= n; r++){
  22.         sum += a[r];
  23.  
  24.         while(l <= r && sum > m)
  25.             sum -= a[l], l++;
  26.  
  27.         ll len = r - l + 1;
  28.  
  29.         ans += len;
  30.     }
  31.  
  32.     cout << ans;
  33. }
  34. int main()
  35. {
  36.     ios::sync_with_stdio(NULL);
  37.     cin.tie(0);
  38.     cout.tie(0);
  39.  
  40. //    freopen("","r", stdin);
  41. //    freopen("","w", stdout);
  42. //    cin>>T;
  43.     while(T--)
  44.         solve();
  45.     return 0;
  46. }
  47.  
Success #stdin #stdout 0.01s 5544KB
comments (?)
stdin
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7 20
2 6 4 3 6 8 9
stdout
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19
https://ideone.com/Y3JCru
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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