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  1. #include<iostream>
  2. #include<map>
  3. #include<limits.h>
  4. using namespace std;
  5.  
  6. int pre[100001];
  7. int main()
  8. {
  9.     int t;
  10.     cin >>t;
  11.     while(t--)
  12.     {
  13.         int n,d,a,ans=INT_MAX;
  14.         cin >> n >> d;
  15.         for(int i = 1 ; i <= n ; ++i){cin >> a;pre[i] = pre[i-1] + a;}
  16.         map<int ,int>mp;
  17.  
  18.         for(int i = 1;i<=n;++i)
  19.         {
  20.             if(pre[i] >= d)ans = min(ans,i);
  21.             map<int,int>::iterator it;
  22.  
  23.             it = mp.lower_bound(pre[i]-d);
  24.  
  25.             if(it == mp.end() && it!=mp.begin() && mp.size()>0)
  26.             --it;
  27.  
  28.             if(it->first <= pre[i]-d && mp.size()>0)ans = min(ans,i-(it->second));
  29.             else if(it!=mp.begin() && mp.size()>0)
  30.             {
  31.                 ans = min(ans,i-((--it)->second));
  32.             }
  33.             it = mp.lower_bound(pre[i]);
  34.  
  35.             while(it!=mp.end() && mp.size()>0)
  36.             {
  37.                 mp.erase(it);
  38.                 it=mp.lower_bound(pre[i]);
  39.             }
  40.             mp[pre[i]]=i;
  41.         }
  42.        if(ans>n)cout << -1 <<"\n";
  43.        else cout << ans <<"\n";
  44.        mp.clear();
  45.     }
  46.     return 0;
  47. }
  48.  
Time limit exceeded #stdin #stdout 5s 4388KB
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https://ideone.com/1cSFwO
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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