oj.uz

Submission #969970

# Submission time Handle Problem Language Result Execution time Memory
969970 2024-04-26T02:48:39 Z Requiem Financial Report (JOI21_financial) C++17
5 / 100
 96 ms 18932 KB 
#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 1000000007
#define INF 1e18
#define fi first
#define se second
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define endl '\n'
#define pi 3.14159265359
#define TASKNAME "financialreport"
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }
using namespace std;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef vector<int> vi;
const int MAXN = 3e5 + 9;
int a[MAXN], n, d;

namespace subtask1{
    bool checkSubtask1(){
         return n <= 20;
    }

    void solveSubtask1(){
         int res = 0;
         for(int msk = 0; msk < (1 << (n - 1)); msk++){
             int prv = -1, mx = -INF, valid = 1, cur = 0;
             for(int j = 0; j < n; j++){
                 if ((msk & (1 << j)) or j == n - 1) {

                     if (prv != -1 and j - prv > d) valid = 0;
                     if (maximize(mx, a[j + 1])){
                         cur++;
                     }
                     prv = j;
                 }
             }

             if (valid) maximize(res, cur);
         }
         cout << res << endl;
    }
}

namespace subtask2{
    bool checkSubtask2(){
         return n <= 400;
    }

    int dp[406][406];
    vector<int> listval;
    void computeDp1(){
         memset(dp, -0x3f, sizeof(dp));
         for(int i = 1; i <= n; i++){
             dp[i][i] = 1;
         }
         a[0] = -INF;
         for(int i = 0; i <= n; i++){ //regard i
             for(int j = 0; j <= n; j++){
                 if (dp[i][j] > -INF){
//                     cout << i << ' ' << j << ' ' << dp[i][j] << endl;
                     for(int k = i + 1; k <= min(i + d, n); k++){
                         int mxId = (a[j] >= a[k]) ? j : k;
                         if (mxId == k) maximize(dp[k][mxId], dp[i][j] + 1);
                         else maximize(dp[k][mxId], dp[i][j]);
                     }
                 }
             }
         }
         int res = 0;
         for(int i = 0; i <= n; i++){
             maximize(res, dp[n][i]);
         }
         cout << res << endl;
    }

    void computeDp2(){
         for(int i = 1; i <= n; i++){
             listval.pb(a[i]);
         }
         sort(listval.begin(), listval.end());
         listval.erase(unique(listval.begin(), listval.end()), listval.end());

    }
    void solveSubtask2(){
         computeDp1();
    }
}

namespace subtask3{
    int Valid[7003][7003];
    bool checkSubtask3(){
         return n <= 7000;
    }
    int dp[MAXN];

    void solveSubtask3(){
         memset(Valid, 0x3f, sizeof(Valid));
         deque<int> opt;

         for(int i = 1; i <= n; i++){
             Valid[i][i] = a[i];
             for(int j = i; j <= n; j++){
                 if (j - i <= d) Valid[i][j] = max(a[i], a[j]);
                 else minimize(Valid[i][j], max(Valid[i][opt.front()], a[j]) );

                 while(!opt.empty() and Valid[i][j] <= Valid[i][opt.back()]) opt.pop_back();
                 opt.push_back(j);
                 while(!opt.empty() and opt.front() + d <= j) {
                       opt.pop_front();
                 }
//                 cout << Valid[i][j] << ' ';
             }
             opt.clear();
//             cout << endl;
         }
         int res = 0;
         for(int i = 1; i <= n; i++){
             dp[i] = 1;
             for(int j = i - 1; j >= 1; j--){
                 if (Valid[j][i] <= a[i] and a[i] > a[j]) maximize(dp[i], dp[j] + 1);
             }
             maximize(res, dp[i]);
//             cout << dp[i] << ' ';
         }
//         cout << endl;
         cout << res << endl;
    }
}
namespace subtask4{
    bool checkSubtask4(){
         return d == 1;
    }

    void solveSubtask4(){
        stack<int> st;
        int res = 1;
        st.push(n);
        for(int i = n - 1; i >= 1; i--){
            while(!st.empty() and a[i] >= a[st.top()]) st.pop();
            st.push(i);
            maximize(res, (int) st.size());
        }
        cout << res << endl;
    }
}

namespace subtask5{
    bool checkSubtask5(){
        return d == n;
    }

    int dp[MAXN];

    void solveSubtask5(){
        multiset<int> st;
        int res = 0;
        for(int i = 1; i <= n; i++){
            auto it = st.lower_bound(a[i]);
//            cout << st.size() << ' ' << i << endl;
            if (it == st.end()) st.insert(a[i]);
            else {
                st.erase(it);
                st.insert(a[i]);
            }
        }

        cout << (int) st.size() << endl;
    }
}

namespace subtask6{
    int dp[MAXN];
    bool checkSubtask6(){
         return true;
    }
    multiset<int> st;
    void solveSubtask6(){
        for(int i = 1; i <= n; i++){
            auto it = st.lower_bound(a[i]);
            if (it == st.end()) st.insert(a[i]);
            else {
                st.erase(it);
                st.insert(a[i]);
            }
        }

        cout << (int) st.size() << endl;
    }
}
main()
{
    fast;
    if (fopen(TASKNAME".inp","r")){
        freopen(TASKNAME".inp","r",stdin);
        freopen(TASKNAME".out","w",stdout);
    }
    cin >> n >> d;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
    }

//    if (subtask1::checkSubtask1()) return subtask1::solveSubtask1(), 0;
//    if (subtask2::checkSubtask2()) return subtask2::solveSubtask2(), 0;
//    if (subtask3::checkSubtask3()) return subtask3::solveSubtask3(), 0;
//    if (subtask4::checkSubtask4()) return subtask4::solveSubtask4(), 0;
//    if (subtask5::checkSubtask5()) return subtask5::solveSubtask5(), 0;
    if (subtask6::checkSubtask6()) return subtask6::solveSubtask6(), 0;
}
/**
Warning:
- MLE / TLE?
- Gioi han mang?
- Gia tri max phai luon gan cho -INF
- long long co can thiet khong?
- tran mang.
- code can than hon
- Nho sinh test de tranh RTE / TLE

--> Coi lai truoc khi nop
**/

Compilation message

Main.cpp: In function 'void subtask5::solveSubtask5()':
Main.cpp:162:13: warning: unused variable 'res' [-Wunused-variable]
  162 |         int res = 0;
      |             ^~~
Main.cpp: At global scope:
Main.cpp:196:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  196 | main()
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:200:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  200 |         freopen(TASKNAME".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:201:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  201 |         freopen(TASKNAME".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 2 ms 4444 KB Output is correct
7 Correct 1 ms 4528 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4440 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Incorrect 1 ms 4444 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 2 ms 4444 KB Output is correct
7 Correct 1 ms 4528 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4440 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Incorrect 1 ms 4444 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 2 ms 4444 KB Output is correct
7 Correct 1 ms 4528 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4440 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Incorrect 1 ms 4444 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 4948 KB Output is correct
2 Correct 44 ms 4820 KB Output is correct
3 Incorrect 55 ms 4968 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 4804 KB Output is correct
2 Correct 48 ms 4964 KB Output is correct
3 Correct 53 ms 4988 KB Output is correct
4 Correct 53 ms 4952 KB Output is correct
5 Correct 80 ms 10436 KB Output is correct
6 Correct 57 ms 5160 KB Output is correct
7 Correct 96 ms 18932 KB Output is correct
8 Correct 31 ms 4952 KB Output is correct
9 Correct 64 ms 8852 KB Output is correct
10 Correct 54 ms 5036 KB Output is correct
11 Correct 53 ms 4980 KB Output is correct
12 Correct 35 ms 4956 KB Output is correct

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 2 ms 4444 KB Output is correct
7 Correct 1 ms 4528 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4440 KB Output is correct
10 Correct 1 ms 4440 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Incorrect 1 ms 4444 KB Output isn't correct
13 Halted 0 ms 0 KB -