Submission #201842

#	Time	Username	Problem	Language	Result	Execution time	Memory
201842		theStaticMind	Two Antennas (JOI19_antennas)	C++14	2 / 100	3074 ms	524292 KiB

antennas

#include<bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
#define int long long int
using namespace std;

int32_t main(){
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
   //   freopen("q.gir","r",stdin);
   //   freopen("q.cik","w",stdout);
      int n;
      cin >> n;
      vector<int> H(n + 1);
      vector<int> A(n + 1);
      vector<int> B(n+ 1);
      for(int i = 1; i <= n; i++){
            cin >> H[i] >> A[i] >> B[i];
      }

      int q;
      cin >> q;
      while(q--){
            int l, r, ans = -1;
            cin >> l >> r;
            set<int> S[n + 1];
            for(int i = l; i <= r; i++){
                  for(int j = max(1ll, i - B[i]); j <= max(0ll, i - A[i]); j++){
                        if(j < l || r < j)continue;
                        if(S[j].count(i)) ans = max(ans, abs(H[i] - H[j]));
                        S[i].insert(j);
                  }
                  for(int j = min(n + 1, i + A[i]); j <= min(n, i + B[i]); j++){
                        if(j < l || r < j)continue;
                        if(S[j].count(i)) ans = max(ans, abs(H[i] - H[j]));
                        S[i].insert(j);
                  }
            }
            cout << ans << "\n";
      }
}

• Subtask 1: 2 / 2
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 65