oj.uz

Submission #201864

# Submission time Handle Problem Language Result Execution time Memory
201864 2020-02-12T10:26:43 Z theStaticMind Two Antennas (JOI19_antennas) C++14
24 / 100
 3000 ms 29776 KB 
#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 2e9
#define modulo 1000000007
#define mod 998244353
//#define int long long int
using namespace std;

vector<int> segn, segx;
int S;
int get(int a, int b, bool mx){
      return (mx ? max(a, b) : min(a, b));
}
void build(vector<int>& seg, bool mx){
      S = (1ll << (int)ceil(log2(seg.size())));
      int l = S - seg.size();
      for(int i = 0; i < l; i++)seg.pb(mx?0:INF);
      reverse(all(seg));
      for(int i = 1; i < seg.size(); i += 2) seg.pb(get(seg[i - 1], seg[i], mx));
      seg.pb('a' + 't' + 'a' + 'k' + 'a' + 'n');
      reverse(all(seg));
}

int query(vector<int>& seg, int j, int a, int b, int x, int y, bool mx){
      if(y < a || b < x) return(mx ? 0 : INF);
      if(a <= x && y <= b) return seg[j];
      return  get(query(seg, j * 2, a, b, x, (x + y) / 2, mx), query(seg, j * 2 + 1, a ,b, (x + y) / 2 + 1, y, mx), mx);
}
void update(vector<int>& seg, int j, int v,bool mx){
      seg[j] = v;
      j /= 2;
      while(j > 0){
            seg[j] = get(seg[j * 2], seg[j * 2 + 1], mx);
            j /= 2;
      }
}
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);
      vector<int> sweep[2 * n + 5];
      unordered_set<int> curr;
      for(int i = 1; i <= n; i++){
            cin >> H[i] >> A[i] >> B[i];
            sweep[i + A[i]].pb(i);
            sweep[i + B[i]].pb(-i);
      }

      segn = vector<int>(n + 1, INF);
      segx = vector<int>(n + 1, 0);
      build(segx, true);
      build(segn, false);

      int q;
      cin >> q;
      vector<int> ans(q + 2, -1);
      vector<int> qq(q + 2);
      vector<int> Q[n + 2];
      for(int i = 1; i <= q; i++){
            int l, r;
            cin >> l >> r;
            Q[l].pb(i);
            Q[r + 1].pb(-i);
            qq[i] = l;
      }
      for(int i = 1; i <= n; i++){
            for(int j = 0; j < sweep[i].size(); j++){
                  int id = sweep[i][j];
                  if(id > 0){
                        update(segx, segx.size() - S + id, H[id], true);
                        update(segn, segn.size() - S + id, H[id], false);
                  }
            }
            for(int j = 0; j < Q[i].size(); j++){
                  int id = Q[i][j];
                  if(id > 0){
                        curr.insert(id);
                  }
                  else {
                        curr.erase(-id);
                  }
            }
            for(unordered_set<int>::iterator itr = curr.begin(); itr != curr.end(); itr++){
                  ans[*itr] = max(ans[*itr],
                      max(
                          query(segx, 1, max(i - B[i], qq[*itr]), i - A[i], 0, S - 1, true) - H[i] ,
                          H[i] - query(segn, 1, max(i - B[i], qq[*itr]), i - A[i], 0, S - 1, false)
                          )
                      );
            }

            for(int j = 0; j < sweep[i].size(); j++){
                  int id = sweep[i][j];
                  if(id < 0){
                        id = -id;
                        update(segx, segx.size() - S + id, 0, true);
                        update(segn, segn.size() - S + id, INF, false);
                  }
            }

      }
      for(int i = 1; i <= q; i++) cout << ans[i] << "\n";
}

Compilation message

antennas.cpp: In function 'void build(std::vector<int>&, bool)':
antennas.cpp:22:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i = 1; i < seg.size(); i += 2) seg.pb(get(seg[i - 1], seg[i], mx));
                      ~~^~~~~~~~~~~~
antennas.cpp: In function 'int32_t main()':
antennas.cpp:76:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0; j < sweep[i].size(); j++){
                            ~~^~~~~~~~~~~~~~~~~
antennas.cpp:83:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0; j < Q[i].size(); j++){
                            ~~^~~~~~~~~~~~~
antennas.cpp:101:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0; j < sweep[i].size(); j++){
                            ~~^~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 7 ms 376 KB Output is correct
3 Correct 8 ms 376 KB Output is correct
4 Correct 8 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct
6 Correct 6 ms 376 KB Output is correct
7 Correct 7 ms 376 KB Output is correct
8 Correct 8 ms 376 KB Output is correct
9 Correct 6 ms 380 KB Output is correct
10 Correct 7 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 7 ms 376 KB Output is correct
14 Correct 7 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 6 ms 376 KB Output is correct
17 Correct 6 ms 376 KB Output is correct
18 Correct 7 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 6 ms 376 KB Output is correct
21 Correct 6 ms 376 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 7 ms 376 KB Output is correct
24 Correct 7 ms 380 KB Output is correct

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 7 ms 376 KB Output is correct
3 Correct 8 ms 376 KB Output is correct
4 Correct 8 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct
6 Correct 6 ms 376 KB Output is correct
7 Correct 7 ms 376 KB Output is correct
8 Correct 8 ms 376 KB Output is correct
9 Correct 6 ms 380 KB Output is correct
10 Correct 7 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 7 ms 376 KB Output is correct
14 Correct 7 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 6 ms 376 KB Output is correct
17 Correct 6 ms 376 KB Output is correct
18 Correct 7 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 6 ms 376 KB Output is correct
21 Correct 6 ms 376 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 7 ms 376 KB Output is correct
24 Correct 7 ms 380 KB Output is correct
25 Execution timed out 3090 ms 6440 KB Time limit exceeded
26 Halted 0 ms 0 KB -

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 312 ms 27028 KB Output is correct
2 Correct 330 ms 29624 KB Output is correct
3 Correct 239 ms 22188 KB Output is correct
4 Correct 351 ms 29624 KB Output is correct
5 Correct 134 ms 14028 KB Output is correct
6 Correct 377 ms 29776 KB Output is correct
7 Correct 308 ms 26256 KB Output is correct
8 Correct 364 ms 29628 KB Output is correct
9 Correct 59 ms 4748 KB Output is correct
10 Correct 351 ms 29724 KB Output is correct
11 Correct 181 ms 18124 KB Output is correct
12 Correct 373 ms 29628 KB Output is correct
13 Correct 237 ms 26808 KB Output is correct
14 Correct 246 ms 26748 KB Output is correct
15 Correct 203 ms 26936 KB Output is correct
16 Correct 226 ms 28092 KB Output is correct
17 Correct 252 ms 26680 KB Output is correct
18 Correct 211 ms 26680 KB Output is correct
19 Correct 225 ms 26548 KB Output is correct
20 Correct 229 ms 26636 KB Output is correct
21 Correct 224 ms 26272 KB Output is correct
22 Correct 235 ms 26684 KB Output is correct
23 Correct 223 ms 26420 KB Output is correct
24 Correct 199 ms 27316 KB Output is correct

Subtask #4
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 7 ms 376 KB Output is correct
3 Correct 8 ms 376 KB Output is correct
4 Correct 8 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct
6 Correct 6 ms 376 KB Output is correct
7 Correct 7 ms 376 KB Output is correct
8 Correct 8 ms 376 KB Output is correct
9 Correct 6 ms 380 KB Output is correct
10 Correct 7 ms 376 KB Output is correct
11 Correct 6 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 7 ms 376 KB Output is correct
14 Correct 7 ms 376 KB Output is correct
15 Correct 6 ms 376 KB Output is correct
16 Correct 6 ms 376 KB Output is correct
17 Correct 6 ms 376 KB Output is correct
18 Correct 7 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 6 ms 376 KB Output is correct
21 Correct 6 ms 376 KB Output is correct
22 Correct 6 ms 376 KB Output is correct
23 Correct 7 ms 376 KB Output is correct
24 Correct 7 ms 380 KB Output is correct
25 Execution timed out 3090 ms 6440 KB Time limit exceeded
26 Halted 0 ms 0 KB -