oj.uz

Submission #1007864

# Submission time Handle Problem Language Result Execution time Memory
1007864 2024-06-25T15:41:31 Z devariaota Lasers (NOI19_lasers) C++17
100 / 100
 202 ms 46212 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define ll long long
#define pb push_back
#define pii pair<ll,ll>
#define fi first
#define sec second
#define endl '\n'
#define ordered_set tree<ll, null_type,less<ll>, rb_tree_tag, tree_order_statistics_node_update>
#define ordered_multiset tree<ll, null_type,  less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update> 

const ll MOD = 998244353;
const ll N = 5e5 + 5;
const ll INF = 1e18;

vector<ll>vec[N];

int32_t main(){
  cin.tie(0)->sync_with_stdio(0);
  int tc = 1;
  // cin >> tc;
  while(tc--){
    ll n,q; cin >> n >> q;
    for(int i=1;i<=q;i++){
      ll a; cin >> a;
      for(int j=1;j<=a;j++){
        ll x; cin >> x;
        vec[i].pb(x);
      }
    }
    set<pii>interval;
    for(int i=1;i<=q;i++){
      ll l = 1;
      vector<ll>suff(vec[i].size() + 5);
      for(int j=vec[i].size();j>=0;j--){
        if(j == vec[i].size()-1) suff[j] = vec[i][j];
        else suff[j] = suff[j+1] + vec[i][j];
      }
      for(int j=0;j<vec[i].size();j++){
        ll val = max(0LL, 2*vec[i][j] - (n-(j == vec[i].size()-1 ? 0 : suff[j+1])-l+1));
        if(val > 0) interval.insert({l-val+vec[i][j], l+vec[i][j]-1});
        l += vec[i][j];
      }
    }
    if(interval.size() == 0){
      cout << 0 << endl;
      continue;
    }
    ll last = -1, prev = -1, mx = 0, ans = 0;
    for(auto i : interval){
      if(prev == -1) prev = i.fi;
      if(i.fi != prev){
        ans += max(0LL, last - max(prev - 1,mx));
        mx = max(mx, last);
        prev = i.fi;
        last = 0;
      }
      last = i.sec;
    }
    ans += max(0LL, last - max(prev - 1,mx));
    cout << ans << endl;
  }
}
/*
1 2 3 4 5 6 7 8 9 10 11
*/

Compilation message

lasers.cpp: In function 'int32_t main()':
lasers.cpp:39:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         if(j == vec[i].size()-1) suff[j] = vec[i][j];
      |            ~~^~~~~~~~~~~~~~~~~~
lasers.cpp:42:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |       for(int j=0;j<vec[i].size();j++){
      |                   ~^~~~~~~~~~~~~~
lasers.cpp:43:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         ll val = max(0LL, 2*vec[i][j] - (n-(j == vec[i].size()-1 ? 0 : suff[j+1])-l+1));
      |                                             ~~^~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 2 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 2 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 4 ms 12132 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 2 ms 12124 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 2 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 2 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 4 ms 12132 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 2 ms 12124 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 75 ms 27288 KB Output is correct
13 Correct 4 ms 12196 KB Output is correct
14 Correct 2 ms 12124 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 202 ms 40608 KB Output is correct
18 Correct 3 ms 12124 KB Output is correct
19 Correct 3 ms 12124 KB Output is correct
20 Correct 2 ms 12124 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 26232 KB Output is correct
2 Correct 11 ms 14576 KB Output is correct
3 Correct 8 ms 14280 KB Output is correct
4 Correct 44 ms 27408 KB Output is correct
5 Correct 19 ms 18632 KB Output is correct
6 Correct 29 ms 18964 KB Output is correct
7 Correct 4 ms 12380 KB Output is correct
8 Correct 31 ms 24636 KB Output is correct
9 Correct 30 ms 22588 KB Output is correct
10 Correct 50 ms 30396 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12120 KB Output is correct
2 Correct 2 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 2 ms 12200 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 2 ms 12124 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 2 ms 12124 KB Output is correct
10 Correct 2 ms 12124 KB Output is correct

Subtask #5
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 26232 KB Output is correct
2 Correct 11 ms 14576 KB Output is correct
3 Correct 8 ms 14280 KB Output is correct
4 Correct 44 ms 27408 KB Output is correct
5 Correct 19 ms 18632 KB Output is correct
6 Correct 29 ms 18964 KB Output is correct
7 Correct 4 ms 12380 KB Output is correct
8 Correct 31 ms 24636 KB Output is correct
9 Correct 30 ms 22588 KB Output is correct
10 Correct 50 ms 30396 KB Output is correct
11 Correct 4 ms 12120 KB Output is correct
12 Correct 2 ms 12124 KB Output is correct
13 Correct 3 ms 12124 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 2 ms 12200 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 2 ms 12124 KB Output is correct
18 Correct 3 ms 12124 KB Output is correct
19 Correct 2 ms 12124 KB Output is correct
20 Correct 2 ms 12124 KB Output is correct
21 Correct 152 ms 40384 KB Output is correct
22 Correct 27 ms 17748 KB Output is correct
23 Correct 14 ms 16232 KB Output is correct
24 Correct 56 ms 27492 KB Output is correct
25 Correct 167 ms 40528 KB Output is correct
26 Correct 56 ms 23884 KB Output is correct
27 Correct 24 ms 16980 KB Output is correct
28 Correct 143 ms 40308 KB Output is correct
29 Correct 192 ms 40800 KB Output is correct
30 Correct 33 ms 23176 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12120 KB Output is correct
2 Correct 2 ms 12124 KB Output is correct
3 Correct 3 ms 12124 KB Output is correct
4 Correct 3 ms 12124 KB Output is correct
5 Correct 2 ms 12124 KB Output is correct
6 Correct 3 ms 12124 KB Output is correct
7 Correct 4 ms 12132 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 2 ms 12124 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 75 ms 27288 KB Output is correct
13 Correct 4 ms 12196 KB Output is correct
14 Correct 2 ms 12124 KB Output is correct
15 Correct 3 ms 12124 KB Output is correct
16 Correct 3 ms 12124 KB Output is correct
17 Correct 202 ms 40608 KB Output is correct
18 Correct 3 ms 12124 KB Output is correct
19 Correct 3 ms 12124 KB Output is correct
20 Correct 2 ms 12124 KB Output is correct
21 Correct 41 ms 26232 KB Output is correct
22 Correct 11 ms 14576 KB Output is correct
23 Correct 8 ms 14280 KB Output is correct
24 Correct 44 ms 27408 KB Output is correct
25 Correct 19 ms 18632 KB Output is correct
26 Correct 29 ms 18964 KB Output is correct
27 Correct 4 ms 12380 KB Output is correct
28 Correct 31 ms 24636 KB Output is correct
29 Correct 30 ms 22588 KB Output is correct
30 Correct 50 ms 30396 KB Output is correct
31 Correct 4 ms 12120 KB Output is correct
32 Correct 2 ms 12124 KB Output is correct
33 Correct 3 ms 12124 KB Output is correct
34 Correct 3 ms 12124 KB Output is correct
35 Correct 2 ms 12200 KB Output is correct
36 Correct 3 ms 12124 KB Output is correct
37 Correct 2 ms 12124 KB Output is correct
38 Correct 3 ms 12124 KB Output is correct
39 Correct 2 ms 12124 KB Output is correct
40 Correct 2 ms 12124 KB Output is correct
41 Correct 152 ms 40384 KB Output is correct
42 Correct 27 ms 17748 KB Output is correct
43 Correct 14 ms 16232 KB Output is correct
44 Correct 56 ms 27492 KB Output is correct
45 Correct 167 ms 40528 KB Output is correct
46 Correct 56 ms 23884 KB Output is correct
47 Correct 24 ms 16980 KB Output is correct
48 Correct 143 ms 40308 KB Output is correct
49 Correct 192 ms 40800 KB Output is correct
50 Correct 33 ms 23176 KB Output is correct
51 Correct 18 ms 17820 KB Output is correct
52 Correct 164 ms 44636 KB Output is correct
53 Correct 159 ms 43620 KB Output is correct
54 Correct 39 ms 20052 KB Output is correct
55 Correct 90 ms 30008 KB Output is correct
56 Correct 72 ms 25392 KB Output is correct
57 Correct 64 ms 25032 KB Output is correct
58 Correct 188 ms 46212 KB Output is correct
59 Correct 44 ms 21956 KB Output is correct
60 Correct 56 ms 24112 KB Output is correct