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답안 #1116274

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1116274 2024-11-21T12:08:19 Z SalihSahin Cigle (COI21_cigle) C++14
48 / 100
 1000 ms 145220 KB 
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
 
const int N = 5e3 + 5;
 
vector<int> a(N);

struct SEGT{
   vector<int> tree, lazy;

   void init(int n){
      tree.assign(4*n, 0);
      lazy.assign(4*n, 0);
   }

   void push(int ind){
      if(lazy[ind] == 0) return;

      lazy[ind*2] += lazy[ind];
      tree[ind*2] += lazy[ind];
      lazy[ind*2+1] += lazy[ind];
      tree[ind*2+1] += lazy[ind];
      lazy[ind] = 0;
   }

   void build(int ind, int l, int r, vector<int> &a){
      if(l == r){
         tree[ind] = a[l];
      }
      else{
         int m = (l + r)/2;

         build(ind*2, l, m, a);
         build(ind*2+1, m+1, r, a);
         tree[ind] = max(tree[ind*2], tree[ind*2+1]);
      }
   }

   void update(int ind, int l, int r, int ql, int qr, int val){
      if(l > r || r < ql || l > qr || ql > qr) return;
      if(l >= ql && r <= qr){
         tree[ind] += val;
         lazy[ind] += val;
      }
      else{
         push(ind);
         int m = (l + r)/2;

         update(ind*2, l, m, ql, qr, val);
         update(ind*2+1, m+1, r, ql, qr, val);
         tree[ind] = max(tree[ind*2], tree[ind*2+1]);
      }
   }

   int query(int ind, int l, int r, int ql, int qr){
      if(l > r || r < ql || l > qr || ql > qr) return 0;
      if(l >= ql && r <= qr){
         return tree[ind];
      }
      else{
         push(ind);
         int m = (l + r)/2;

         return max(query(ind*2, l, m, ql, qr), query(ind*2+1, m+1, r, ql, qr));
      }
   }
};
 
 
int 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 = 1; i <= n; i++){
      cin>>a[i];
   }

   vector<pair<int, int> > upd[n+5];

   for(int i = 2; i <= n-1; i++){
      vector<pair<int, int> > v1, v2;
 
      int val = 0;
      for(int j = i; j > 1; 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){
            upd[i].pb({v2[ind2].second, v1[j].second});
         }
      }
   }
 
   vector<vector<int> > dp(n+5, vector<int>(n+5));

   for(int r = 1; r <= n-1; r++){
      sort(upd[r].begin(), upd[r].end());
      int updind = 0;

      SEGT seg;
      seg.init(r);
      vector<int> a(r+1);
      for(int i = 1; i <= r; i++) a[i] = dp[i][r];
      seg.build(1, 1, r, a);

      for(int x = r+1; x <= n; x++){
         while(updind < upd[r].size() && upd[r][updind].first < x){
            seg.update(1, 1, r, 1, upd[r][updind].second-1, 1);
            updind++;
         }

         dp[r+1][x] = seg.tree[1];
      }
   }

   int ans = 0;
   for(int i = 1; i <= n; i++){
      ans = max(ans, dp[i][n]);
   }
   cout<<ans<<endl;
   return 0;
}

Compilation message

cigle.cpp: In function 'int main()':
cigle.cpp:99:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |       for(int j = 0; j < v1.size(); j++){
      |                      ~~^~~~~~~~~~~
cigle.cpp:100:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |          while(ind2 < v2.size() && v2[ind2].first < v1[j].first) ind2++;
      |                ~~~~~^~~~~~~~~~~
cigle.cpp:101:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  101 |          if(ind2 < v2.size() && v2[ind2].first == v1[j].first){
      |             ~~~~~^~~~~~~~~~~
cigle.cpp:120:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |          while(updind < upd[r].size() && upd[r][updind].first < x){
      |                ~~~~~~~^~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 380 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 380 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 592 KB Output is correct
12 Correct 1 ms 592 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 592 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 1872 KB Output is correct
2 Correct 9 ms 2060 KB Output is correct
3 Correct 8 ms 1872 KB Output is correct
4 Correct 8 ms 1872 KB Output is correct
5 Correct 8 ms 1980 KB Output is correct
6 Correct 9 ms 1872 KB Output is correct
7 Correct 9 ms 1872 KB Output is correct
8 Correct 10 ms 1872 KB Output is correct
9 Correct 8 ms 1872 KB Output is correct
10 Correct 7 ms 1872 KB Output is correct
11 Correct 8 ms 1872 KB Output is correct
12 Correct 7 ms 1872 KB Output is correct

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 380 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 592 KB Output is correct
12 Correct 1 ms 592 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 592 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 11 ms 1872 KB Output is correct
22 Correct 9 ms 2060 KB Output is correct
23 Correct 8 ms 1872 KB Output is correct
24 Correct 8 ms 1872 KB Output is correct
25 Correct 8 ms 1980 KB Output is correct
26 Correct 9 ms 1872 KB Output is correct
27 Correct 9 ms 1872 KB Output is correct
28 Correct 10 ms 1872 KB Output is correct
29 Correct 8 ms 1872 KB Output is correct
30 Correct 7 ms 1872 KB Output is correct
31 Correct 8 ms 1872 KB Output is correct
32 Correct 7 ms 1872 KB Output is correct
33 Correct 8 ms 1872 KB Output is correct
34 Correct 8 ms 2024 KB Output is correct
35 Correct 9 ms 1872 KB Output is correct
36 Correct 10 ms 2048 KB Output is correct
37 Correct 9 ms 1844 KB Output is correct
38 Correct 8 ms 1872 KB Output is correct
39 Correct 6 ms 1616 KB Output is correct
40 Correct 5 ms 1360 KB Output is correct
41 Correct 5 ms 1360 KB Output is correct
42 Correct 5 ms 1360 KB Output is correct
43 Correct 6 ms 1696 KB Output is correct
44 Correct 5 ms 1360 KB Output is correct
45 Correct 5 ms 1528 KB Output is correct
46 Correct 6 ms 1360 KB Output is correct
47 Correct 5 ms 1360 KB Output is correct
48 Correct 5 ms 1608 KB Output is correct
49 Correct 5 ms 1360 KB Output is correct

Subtask #5
0 / 52.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 380 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 592 KB Output is correct
12 Correct 1 ms 592 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 592 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 11 ms 1872 KB Output is correct
22 Correct 9 ms 2060 KB Output is correct
23 Correct 8 ms 1872 KB Output is correct
24 Correct 8 ms 1872 KB Output is correct
25 Correct 8 ms 1980 KB Output is correct
26 Correct 9 ms 1872 KB Output is correct
27 Correct 9 ms 1872 KB Output is correct
28 Correct 10 ms 1872 KB Output is correct
29 Correct 8 ms 1872 KB Output is correct
30 Correct 7 ms 1872 KB Output is correct
31 Correct 8 ms 1872 KB Output is correct
32 Correct 7 ms 1872 KB Output is correct
33 Correct 8 ms 1872 KB Output is correct
34 Correct 8 ms 2024 KB Output is correct
35 Correct 9 ms 1872 KB Output is correct
36 Correct 10 ms 2048 KB Output is correct
37 Correct 9 ms 1844 KB Output is correct
38 Correct 8 ms 1872 KB Output is correct
39 Correct 6 ms 1616 KB Output is correct
40 Correct 5 ms 1360 KB Output is correct
41 Correct 5 ms 1360 KB Output is correct
42 Correct 5 ms 1360 KB Output is correct
43 Correct 6 ms 1696 KB Output is correct
44 Correct 5 ms 1360 KB Output is correct
45 Correct 5 ms 1528 KB Output is correct
46 Correct 6 ms 1360 KB Output is correct
47 Correct 5 ms 1360 KB Output is correct
48 Correct 5 ms 1608 KB Output is correct
49 Correct 5 ms 1360 KB Output is correct
50 Correct 961 ms 141348 KB Output is correct
51 Correct 933 ms 143808 KB Output is correct
52 Correct 973 ms 144180 KB Output is correct
53 Correct 944 ms 144144 KB Output is correct
54 Correct 962 ms 144068 KB Output is correct
55 Correct 897 ms 144064 KB Output is correct
56 Execution timed out 1004 ms 145220 KB Time limit exceeded
57 Halted 0 ms 0 KB -