oj.uz

Submission #946526

# Submission time Handle Problem Language Result Execution time Memory
946526 2024-03-14T18:09:17 Z n3rm1n Boat (APIO16_boat) C++17
31 / 100
 1932 ms 524288 KB 
/// boat
#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const int MAXN = 505, MAXX = 1e6+10;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int n, m;
int a[MAXN], b[MAXN];
unordered_map < int, int > id;
vector < int > g, u;
void read_hash()
{
    cin >> n;
    for (int i = 1; i <= n; ++ i)
    {
        cin >> a[i] >> b[i];
        for (int j = a[i]; j <= b[i]; ++ j)
            g.push_back(j);
    }
    sort(g.begin(), g.end());
    u.push_back(g[0]);
    for (int i = 1; i < g.size(); ++ i)
    {
        if(u.back() != g[i])
            u.push_back(g[i]);
    }
    for (int i = 0; i < u.size(); ++ i)
    {
        id[u[i]] = i+1;
    }
}

int dp[MAXX];
const int mod = 1e9 + 7;
int pref[MAXX];
void solve()
{
    int ans = 0;
    int maxx = u.size();
    for (int i = 1; i <= n; ++ i)
    {

        for (int j = id[b[i]]; j >= id[a[i]]; -- j)
        {
            dp[j] += pref[j-1] + 1;
            dp[j] %= mod;
        }
        for (int j = id[a[i]]; j <= u.size(); ++ j)
            pref[j] = (pref[j-1] + dp[j]) % mod;

    }

    ans = pref[maxx];
    ans %= mod;
    cout << ans << endl;
}
int main()
{
    speed();

    read_hash();
    solve();
    return 0;
}

Compilation message

boat.cpp: In function 'void read_hash()':
boat.cpp:27:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for (int i = 1; i < g.size(); ++ i)
      |                     ~~^~~~~~~~~~
boat.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for (int i = 0; i < u.size(); ++ i)
      |                     ~~^~~~~~~~~~
boat.cpp: In function 'void solve()':
boat.cpp:53:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |         for (int j = id[a[i]]; j <= u.size(); ++ j)
      |                                ~~^~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 44 ms 6356 KB Output is correct
22 Correct 44 ms 5076 KB Output is correct
23 Correct 43 ms 5588 KB Output is correct
24 Correct 45 ms 4560 KB Output is correct
25 Correct 46 ms 4816 KB Output is correct
26 Correct 46 ms 6612 KB Output is correct
27 Correct 48 ms 6352 KB Output is correct
28 Correct 48 ms 5844 KB Output is correct
29 Correct 46 ms 5072 KB Output is correct
30 Correct 1932 ms 58412 KB Output is correct
31 Correct 1887 ms 57224 KB Output is correct
32 Correct 1904 ms 58044 KB Output is correct
33 Correct 1848 ms 57168 KB Output is correct
34 Correct 1847 ms 57404 KB Output is correct
35 Correct 1772 ms 55228 KB Output is correct
36 Correct 1866 ms 56908 KB Output is correct
37 Correct 1860 ms 57288 KB Output is correct
38 Correct 1789 ms 56736 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 435 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 44 ms 6356 KB Output is correct
22 Correct 44 ms 5076 KB Output is correct
23 Correct 43 ms 5588 KB Output is correct
24 Correct 45 ms 4560 KB Output is correct
25 Correct 46 ms 4816 KB Output is correct
26 Correct 46 ms 6612 KB Output is correct
27 Correct 48 ms 6352 KB Output is correct
28 Correct 48 ms 5844 KB Output is correct
29 Correct 46 ms 5072 KB Output is correct
30 Correct 1932 ms 58412 KB Output is correct
31 Correct 1887 ms 57224 KB Output is correct
32 Correct 1904 ms 58044 KB Output is correct
33 Correct 1848 ms 57168 KB Output is correct
34 Correct 1847 ms 57404 KB Output is correct
35 Correct 1772 ms 55228 KB Output is correct
36 Correct 1866 ms 56908 KB Output is correct
37 Correct 1860 ms 57288 KB Output is correct
38 Correct 1789 ms 56736 KB Output is correct
39 Runtime error 435 ms 524288 KB Execution killed with signal 9
40 Halted 0 ms 0 KB -