Submission #573431

#	Time	Username	Problem	Language	Result	Execution time	Memory
573431		MohammadAghil	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	100 / 100	1388 ms	105544 KiB

sortbooks

      #include <bits/stdc++.h>
  #pragma GCC optimize ("Ofast,unroll-loops")
// #pragma GCC target ("avx2")
    using namespace std;
  typedef long long ll;
   typedef pair<int, int> 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;}

int seg[maxn<<2], n;
int upd(int i, int k, int x = 1, int lx = 0, int rx = n){
     if(lx + 1 == rx) return seg[x] = max(seg[x], k);
     int mid = (lx + rx)>>1;
     if(i < mid) upd(i, k, x<<1, lx, mid);
     else upd(i, k, x<<1|1, mid, rx);
     return seg[x] = max(seg[x<<1], seg[x<<1|1]);
}
int get(int l, int r, int x = 1, int lx = 0, int rx = n){
     if(l <= lx && r >= rx) return seg[x];
     if(l >= rx || r <= lx) return -1;
     int mid = (lx + rx)>>1;
     return max(get(l, r, x<<1, lx, mid), get(l, r, x<<1|1, mid, rx));
}

int main(){
     cin.tie(0) -> sync_with_stdio(0);
     int q; cin >> n >> q;
     vector<int> w(n);
     rep(i,0,n){
          cin >> w[i];
     }
     struct tr{
          int r, id, k;
     };
     vector<vector<tr>> query(n);
     rep(i,0,q){
          int l, r, k; cin >> l >> r >> k; l--;
          query[l].pb({r, i, k});
     }
     fill(seg, seg+(n<<2), -1);
     vector<int> st;
     vector<bool> ans(q);
     per(i,n-1,0){
          while(sz(st) && w[st.back()] < w[i]){
               upd(st.back(), w[st.back()] + w[i]);
               st.pop_back();
          }
          st.pb(i);
          for(auto[r, id, k]: query[i]){
               ans[id] = get(i, r) <= k;
          }
     }
     for(auto c: ans) cout << c << '\n';
     return 0; 
}

/*
5 2
3 5 1 8 2
1 3 6
2 5 3
*/

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:59:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   59 |           for(auto[r, id, k]: query[i]){
      |                   ^

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 23 / 23