oj.uz

Submission #437753

# Submission time Handle Problem Language Result Execution time Memory
437753 2021-06-27T02:55:34 Z kiennguyen246 Progression (NOI20_progression) C++14
24 / 100
 199 ms 9404 KB 
/**
 * \author Nguyen Duc Kien
 * \date 20/06/2021
 */

///Task name
#define TASK ""

///-------------------------------------------///

#include <bits/stdc++.h>

using namespace std;

const int maxn = 3e5 + 5;

int n, Q;
long long a[maxn];
struct query
{
    int req, L, R, S, C;

    void inp()
    {
        cin >> req >> L >> R;
        if (req != 3) cin >> S >> C;
    }

}q[maxn];

namespace Sub1
{
    void Main()
    {
        int res = 1;
        int d = 2;
        a[n + 1] = 1e9 + 69;
        for (int i = 2; i <= n; i ++)
        {
            if (a[i + 1] - a[i] == a[i] - a[i - 1]) d ++;
            else res = max(res, d), d = 2;
        }
        bool f2 = 0;
        for (int i = 1; i <= Q; i ++)
        {
            if (q[i].req == 2) f2 = 1;
            else if (q[i].req == 3)
            {
                if (f2 == 0) cout << res << "\n";
                else cout << n << "\n";
            }
        }
    }
}

namespace Sub2
{
    void Main()
    {
        for (int t = 1; t <= Q; t ++)
        {
            int L = q[t].L;
            int R = q[t].R;
            int S = q[t].S;
            int C = q[t].C;
            if (q[t].req == 1)
            {
                for (int i = L; i <= R; i ++)
                    a[i] = a[i] + S + 1ll * (i - L) * C;
            }
            else if (q[t].req == 2)
            {
                for (int i = L; i <= R; i ++)
                    a[i] = S + 1ll * (i - L) * C;
            }
            else
            {
                int res = 1, cur = 2;
                long long d = a[L + 1] - a[L];
                for (int i = L + 1; i < R; i ++)
                {
                    if (a[i + 1] - a[i] == d) cur ++;
                    else
                    {
                        res = max(res, cur);
                        cur = 2;
                        d = a[i + 1] - a[i];
                    }
                }
                res = max(res, cur);
                if (L == R) res = 1;
                cout << res << "\n";

            }
        }
    }
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    cerr << "Processing...\n\n";
    if (fopen(TASK".INP", "r"))
    {
        freopen(TASK".INP", "r", stdin);
//        freopen(TASK".OUT", "w", stdout);
    }

    cin >> n >> Q;
    for (int i = 1; i <= n; i ++) cin >> a[i];
    bool all_1_n = 1;
    bool no_change = 1;
    for (int i = 1; i <= Q; i ++)
    {
        q[i].inp();
        if (q[i].L != 1 || q[i].R != n) all_1_n = 0;
        if (q[i].req != 3) no_change = 0;
    }
    if (n <= 1000 && Q <= 1000) Sub2::Main();
    else if (all_1_n) Sub1::Main();
//    else if (no_change) Sub3::Main();
//    Sub1::Main();
    cerr << "\n\n-----------------\n";
    return 0;
}

Compilation message

Progression.cpp: In function 'int main()':
Progression.cpp:113:10: warning: variable 'no_change' set but not used [-Wunused-but-set-variable]
  113 |     bool no_change = 1;
      |          ^~~~~~~~~
Progression.cpp:106:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |         freopen(TASK".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 9156 KB Output is correct
2 Correct 112 ms 6424 KB Output is correct
3 Correct 110 ms 6468 KB Output is correct
4 Correct 118 ms 6468 KB Output is correct
5 Correct 110 ms 6608 KB Output is correct
6 Correct 114 ms 6492 KB Output is correct
7 Correct 110 ms 6468 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 162 ms 9168 KB Output is correct
12 Correct 196 ms 9028 KB Output is correct
13 Correct 163 ms 9404 KB Output is correct
14 Correct 164 ms 9400 KB Output is correct
15 Correct 199 ms 9320 KB Output is correct
16 Correct 162 ms 9092 KB Output is correct
17 Correct 160 ms 9012 KB Output is correct
18 Correct 198 ms 9028 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct
2 Correct 1 ms 332 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 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 472 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 2 ms 332 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 372 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 368 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 2 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct

Subtask #3
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 115 ms 8432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 175 ms 8492 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 115 ms 8432 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 9156 KB Output is correct
2 Correct 112 ms 6424 KB Output is correct
3 Correct 110 ms 6468 KB Output is correct
4 Correct 118 ms 6468 KB Output is correct
5 Correct 110 ms 6608 KB Output is correct
6 Correct 114 ms 6492 KB Output is correct
7 Correct 110 ms 6468 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 162 ms 9168 KB Output is correct
12 Correct 196 ms 9028 KB Output is correct
13 Correct 163 ms 9404 KB Output is correct
14 Correct 164 ms 9400 KB Output is correct
15 Correct 199 ms 9320 KB Output is correct
16 Correct 162 ms 9092 KB Output is correct
17 Correct 160 ms 9012 KB Output is correct
18 Correct 198 ms 9028 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 472 KB Output is correct
26 Correct 1 ms 460 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 372 KB Output is correct
32 Correct 2 ms 332 KB Output is correct
33 Correct 2 ms 332 KB Output is correct
34 Correct 2 ms 332 KB Output is correct
35 Correct 2 ms 368 KB Output is correct
36 Correct 2 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 2 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Incorrect 115 ms 8432 KB Output isn't correct
41 Halted 0 ms 0 KB -