Submission #573599

#	Time	Username	Problem	Language	Result	Execution time	Memory
573599		MohammadAghil	Bigger segments (IZhO19_segments)	C++14	0 / 100	1 ms	340 KiB

segments

      #include <bits/stdc++.h>
//   #pragma GCC optimize ("Ofast,unroll-loops")
// #pragma GCC target ("avx2")
    using namespace std;
  typedef long long ll;
   typedef pair<ll, ll> pp;
    #define er(args ...) cerr << __LINE__ << ": ", err(new istringstream(string(#args)), args), cerr << endl
      #define per(i,r,l) for(int i = (r); i >= (l); i--)
        #define rep(i,l,r) for(int i = (l); i < (r); i++)
           #define all(x) x.begin(), x.end()
              #define sz(x) (int)(x).size()
                  #define pb push_back
                      #define ss second
                           #define ff first
                                   void err(istringstream *iss){}template<typename T,typename ...Args> void err(istringstream *iss,const T &_val, const Args&...args){string _name;*iss>>_name;if(_name.back()==',')_name.pop_back();cerr<<_name<<" = "<<_val<<", ",err(iss,args...);}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll mod = 1e9 + 7, maxn = 1e6 + 5, lg = 22, lng = 26, inf = ll(1e9) + 5;
ll pw(ll a,ll b,ll md=mod){if(!b)return 1;ll k=pw(a,b>>1ll);return k*k%md*(b&1ll?a:1)%md;}

pp dp[maxn];

int main(){
     cin.tie(0) -> sync_with_stdio(0);
     ll n; cin >> n;
     vector<ll> a(n+1);
     rep(i,1,n+1) cin >> a[i];
     dp[0] = {0, 0};
     ll ptr = 0;
     ll cr = 0;
     rep(i,1,n+1){
          cr += a[i];
          while(ptr < i-1 && cr - a[ptr+1] >= dp[ptr+1].ff) ptr++, cr -= a[ptr];
          dp[i] = {cr, 1 + dp[ptr].ss};
     }
     cout << dp[n].ss << '\n';
     return 0; 
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27