oj.uz

Submission #1116166

# Submission time Handle Problem Language Result Execution time Memory
1116166 2024-11-21T09:50:08 Z SalihSahin Cigle (COI21_cigle) C++14
48 / 100
 1000 ms 279388 KB 
#include <bits/stdc++.h>
#define pb push_back
#define int long long
using namespace std;

const int inf = 1e16;
const int N = 5e3 + 5;

vector<int> a(N);
vector<pair<int, int> > prec[N];

int add(int l, int r, int x){
   if(!prec[r].size() || (prec[r][0].first <= l || prec[r][0].second >= x)) return 0;

   int lb = 0, rb = prec[r].size()-1;
   while(lb < rb){
      int mid = (lb + rb + 1)/2;

      if(prec[r][mid].first > l && prec[r][mid].second < x) lb = mid;
      else rb = mid - 1;
   }

   return lb + 1;
}


int32_t main(){
   ios_base::sync_with_stdio(false);
   cin.tie(0); cout.tie(0);
   // dp[son kat l][son kat r] -> dp[r + 1][x] + match({l, r} , {r+1, x});
   int n;
   cin>>n;
   for(int i = 0; i < n; i++){
      cin>>a[i];
   }

   for(int i = 1; i < n-1; i++){
      vector<pair<int, int> > v1, v2;

      int val = 0;
      for(int j = i; j > 0; j--){
         val += a[j];
         v1.pb({val, j});
      }

      val = 0;
      for(int j = i+1; j < n-1; j++){
         val += a[j];
         v2.pb({val, j});
      }

      int ind2 = 0;
      for(int j = 0; j < v1.size(); j++){
         while(ind2 < v2.size() && v2[ind2].first < v1[j].first) ind2++;
         if(ind2 < v2.size() && v2[ind2].first == v1[j].first){
            prec[i].pb({v1[j].second, v2[ind2].second});
         }
      }
   }

   vector<vector<int> > dp(n, vector<int>(n, -inf));
   for(int i = 0; i < n; i++){
      dp[0][i] = 0;
   }

   int ans = 0;
   for(int l = 0; l < n; l++){
      for(int r = l; r < n; r++){
         for(int x = r+1; x < n; x++){
            dp[r+1][x] = max(dp[r+1][x], dp[l][r] + add(l, r, x));
         }
      }
      ans = max(ans, dp[l][n-1]);
   }

   cout<<ans<<endl;
   return 0;
}

Compilation message

cigle.cpp: In function 'int32_t main()':
cigle.cpp:53:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |       for(int j = 0; j < v1.size(); j++){
      |                      ~~^~~~~~~~~~~
cigle.cpp:54:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |          while(ind2 < v2.size() && v2[ind2].first < v1[j].first) ind2++;
      |                ~~~~~^~~~~~~~~~~
cigle.cpp:55:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |          if(ind2 < v2.size() && v2[ind2].first == v1[j].first){
      |             ~~~~~^~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 764 KB Output is correct
4 Correct 1 ms 592 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 1 ms 592 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 1 ms 764 KB Output is correct
9 Correct 1 ms 592 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 764 KB Output is correct
4 Correct 1 ms 592 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 1 ms 592 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 1 ms 764 KB Output is correct
9 Correct 1 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 592 KB Output is correct
12 Correct 2 ms 592 KB Output is correct
13 Correct 2 ms 592 KB Output is correct
14 Correct 2 ms 592 KB Output is correct
15 Correct 2 ms 592 KB Output is correct
16 Correct 1 ms 592 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 592 KB Output is correct
19 Correct 1 ms 764 KB Output is correct
20 Correct 2 ms 592 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 204 ms 3152 KB Output is correct
2 Correct 264 ms 3708 KB Output is correct
3 Correct 223 ms 3424 KB Output is correct
4 Correct 260 ms 3524 KB Output is correct
5 Correct 254 ms 3580 KB Output is correct
6 Correct 264 ms 3408 KB Output is correct
7 Correct 261 ms 3548 KB Output is correct
8 Correct 268 ms 3408 KB Output is correct
9 Correct 262 ms 3408 KB Output is correct
10 Correct 232 ms 3408 KB Output is correct
11 Correct 243 ms 3152 KB Output is correct
12 Correct 225 ms 3152 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 764 KB Output is correct
4 Correct 1 ms 592 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 1 ms 592 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 1 ms 764 KB Output is correct
9 Correct 1 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 592 KB Output is correct
12 Correct 2 ms 592 KB Output is correct
13 Correct 2 ms 592 KB Output is correct
14 Correct 2 ms 592 KB Output is correct
15 Correct 2 ms 592 KB Output is correct
16 Correct 1 ms 592 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 592 KB Output is correct
19 Correct 1 ms 764 KB Output is correct
20 Correct 2 ms 592 KB Output is correct
21 Correct 204 ms 3152 KB Output is correct
22 Correct 264 ms 3708 KB Output is correct
23 Correct 223 ms 3424 KB Output is correct
24 Correct 260 ms 3524 KB Output is correct
25 Correct 254 ms 3580 KB Output is correct
26 Correct 264 ms 3408 KB Output is correct
27 Correct 261 ms 3548 KB Output is correct
28 Correct 268 ms 3408 KB Output is correct
29 Correct 262 ms 3408 KB Output is correct
30 Correct 232 ms 3408 KB Output is correct
31 Correct 243 ms 3152 KB Output is correct
32 Correct 225 ms 3152 KB Output is correct
33 Correct 203 ms 3168 KB Output is correct
34 Correct 233 ms 3420 KB Output is correct
35 Correct 226 ms 3408 KB Output is correct
36 Correct 260 ms 3408 KB Output is correct
37 Correct 273 ms 3408 KB Output is correct
38 Correct 269 ms 3408 KB Output is correct
39 Correct 182 ms 2640 KB Output is correct
40 Correct 56 ms 2552 KB Output is correct
41 Correct 70 ms 2384 KB Output is correct
42 Correct 89 ms 2384 KB Output is correct
43 Correct 80 ms 2384 KB Output is correct
44 Correct 62 ms 2384 KB Output is correct
45 Correct 77 ms 2600 KB Output is correct
46 Correct 72 ms 2384 KB Output is correct
47 Correct 62 ms 2592 KB Output is correct
48 Correct 75 ms 2384 KB Output is correct
49 Correct 77 ms 2384 KB Output is correct

Subtask #5
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 592 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 764 KB Output is correct
4 Correct 1 ms 592 KB Output is correct
5 Correct 1 ms 592 KB Output is correct
6 Correct 1 ms 592 KB Output is correct
7 Correct 1 ms 592 KB Output is correct
8 Correct 1 ms 764 KB Output is correct
9 Correct 1 ms 592 KB Output is correct
10 Correct 2 ms 592 KB Output is correct
11 Correct 2 ms 592 KB Output is correct
12 Correct 2 ms 592 KB Output is correct
13 Correct 2 ms 592 KB Output is correct
14 Correct 2 ms 592 KB Output is correct
15 Correct 2 ms 592 KB Output is correct
16 Correct 1 ms 592 KB Output is correct
17 Correct 1 ms 592 KB Output is correct
18 Correct 1 ms 592 KB Output is correct
19 Correct 1 ms 764 KB Output is correct
20 Correct 2 ms 592 KB Output is correct
21 Correct 204 ms 3152 KB Output is correct
22 Correct 264 ms 3708 KB Output is correct
23 Correct 223 ms 3424 KB Output is correct
24 Correct 260 ms 3524 KB Output is correct
25 Correct 254 ms 3580 KB Output is correct
26 Correct 264 ms 3408 KB Output is correct
27 Correct 261 ms 3548 KB Output is correct
28 Correct 268 ms 3408 KB Output is correct
29 Correct 262 ms 3408 KB Output is correct
30 Correct 232 ms 3408 KB Output is correct
31 Correct 243 ms 3152 KB Output is correct
32 Correct 225 ms 3152 KB Output is correct
33 Correct 203 ms 3168 KB Output is correct
34 Correct 233 ms 3420 KB Output is correct
35 Correct 226 ms 3408 KB Output is correct
36 Correct 260 ms 3408 KB Output is correct
37 Correct 273 ms 3408 KB Output is correct
38 Correct 269 ms 3408 KB Output is correct
39 Correct 182 ms 2640 KB Output is correct
40 Correct 56 ms 2552 KB Output is correct
41 Correct 70 ms 2384 KB Output is correct
42 Correct 89 ms 2384 KB Output is correct
43 Correct 80 ms 2384 KB Output is correct
44 Correct 62 ms 2384 KB Output is correct
45 Correct 77 ms 2600 KB Output is correct
46 Correct 72 ms 2384 KB Output is correct
47 Correct 62 ms 2592 KB Output is correct
48 Correct 75 ms 2384 KB Output is correct
49 Correct 77 ms 2384 KB Output is correct
50 Execution timed out 1059 ms 279388 KB Time limit exceeded
51 Halted 0 ms 0 KB -