oj.uz

Submission #923228

# Submission time Handle Problem Language Result Execution time Memory
923228 2024-02-07T01:52:07 Z vjudge1 Boat (APIO16_boat) C++17
9 / 100
 2000 ms 17092 KB 
#include<bits/stdc++.h>
#define X first
#define Y second
#define all(x) begin(x), end(x)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define FORD(i, b, a) for(int i = (b); i >= (a); i--)
#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define mxx max_element
#define mnn min_element
#define SQR(x) (1LL * (x) * (x))
#define MASK(i) (1LL << (i))
#define Point Vector
#define left Left
#define right Right
#define div Div

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
typedef pair<db, db> pdb;
typedef pair<ld, ld> pld;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
typedef pair<ll, int> pli;
typedef pair<ll, pii> plii;

template<class A, class B>
    bool maximize(A& x, B y) {
        if (x < y) return x = y, true; else return false;
    }
template<class A, class B>
    bool minimize(A& x, B y) {
        if (x > y) return x = y, true; else return false;
    }
/* END OF TEMPLATE */

const int N = 5e2 + 7;
const int mod = 1e9 + 7;
int n, a[N], b[N];

void add(int& x, int y) {
    if ((x+=y) >= mod) x-=mod;
}

namespace sub12 {
    const int N = 1e6 + 5008;
    struct BIT {
        int bit[N], n;
        BIT() {
            n = 0;
            REP(i, 0, N) bit[i] = 0;
        }
        void update(int p, int u) {
            for (; p <= n; p+=p & -p) bit[p] = (bit[p] + u) % mod;
        }
        int Get(int p) {
            int res = 0;
            for (; p > 0; p-=p & -p) res = (res + bit[p]) % mod;
            return res;
        }
    } bit;
    int f[N], pre[N];
    vector<int> E;
    void buildE() {
        FOR(i, 1, n)
            FOR(j, a[i], b[i]) E.push_back(j);
        sort(all(E));
        vector<int> new_E;
        for (auto x : E)
            if (new_E.empty() || new_E.back() != x) new_E.push_back(x);
        E = new_E;
    }
    void Process() {
        buildE();
        bit.n = (int)E.size();
        int m = E.size();
        FOR(i, 1, n) {
            a[i] = lower_bound(all(E), a[i]) - E.begin() + 1;
            b[i] = lower_bound(all(E), b[i]) - E.begin() + 1;
            FOR(j, 0, m) f[j] = 0;
            FOR(j, a[i], b[i]) add(f[j], pre[j - 1] + 1);
            FOR(j, 1, m) add(f[j], f[j - 1]);
            FOR(j, 0, m) add(pre[j], f[j]);
        }
        cout<<pre[m];
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>n;
    ll sum = 0;
    FOR(i, 1, n) {
        cin>>a[i]>>b[i];
        sum+=b[i] - a[i];
    }
    if (sum <= 1e6) {
        sub12::Process();
        return 0;
    }
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7772 KB Output is correct
2 Correct 3 ms 7772 KB Output is correct
3 Correct 3 ms 7768 KB Output is correct
4 Correct 3 ms 7772 KB Output is correct
5 Correct 3 ms 7988 KB Output is correct
6 Correct 3 ms 7772 KB Output is correct
7 Correct 3 ms 7988 KB Output is correct
8 Correct 3 ms 7768 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 3 ms 7772 KB Output is correct
11 Correct 3 ms 7768 KB Output is correct
12 Correct 3 ms 7768 KB Output is correct
13 Correct 3 ms 7772 KB Output is correct
14 Correct 3 ms 7860 KB Output is correct
15 Correct 3 ms 7772 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 2 ms 7768 KB Output is correct
18 Correct 2 ms 7772 KB Output is correct
19 Correct 2 ms 7872 KB Output is correct
20 Correct 2 ms 7772 KB Output is correct

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7772 KB Output is correct
2 Correct 3 ms 7772 KB Output is correct
3 Correct 3 ms 7768 KB Output is correct
4 Correct 3 ms 7772 KB Output is correct
5 Correct 3 ms 7988 KB Output is correct
6 Correct 3 ms 7772 KB Output is correct
7 Correct 3 ms 7988 KB Output is correct
8 Correct 3 ms 7768 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 3 ms 7772 KB Output is correct
11 Correct 3 ms 7768 KB Output is correct
12 Correct 3 ms 7768 KB Output is correct
13 Correct 3 ms 7772 KB Output is correct
14 Correct 3 ms 7860 KB Output is correct
15 Correct 3 ms 7772 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 2 ms 7768 KB Output is correct
18 Correct 2 ms 7772 KB Output is correct
19 Correct 2 ms 7872 KB Output is correct
20 Correct 2 ms 7772 KB Output is correct
21 Correct 47 ms 11456 KB Output is correct
22 Correct 41 ms 11732 KB Output is correct
23 Correct 39 ms 11216 KB Output is correct
24 Correct 42 ms 11984 KB Output is correct
25 Correct 42 ms 11456 KB Output is correct
26 Correct 41 ms 11716 KB Output is correct
27 Correct 41 ms 11728 KB Output is correct
28 Correct 40 ms 11728 KB Output is correct
29 Correct 47 ms 12164 KB Output is correct
30 Execution timed out 2037 ms 17092 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 5724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7772 KB Output is correct
2 Correct 3 ms 7772 KB Output is correct
3 Correct 3 ms 7768 KB Output is correct
4 Correct 3 ms 7772 KB Output is correct
5 Correct 3 ms 7988 KB Output is correct
6 Correct 3 ms 7772 KB Output is correct
7 Correct 3 ms 7988 KB Output is correct
8 Correct 3 ms 7768 KB Output is correct
9 Correct 3 ms 7772 KB Output is correct
10 Correct 3 ms 7772 KB Output is correct
11 Correct 3 ms 7768 KB Output is correct
12 Correct 3 ms 7768 KB Output is correct
13 Correct 3 ms 7772 KB Output is correct
14 Correct 3 ms 7860 KB Output is correct
15 Correct 3 ms 7772 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 2 ms 7768 KB Output is correct
18 Correct 2 ms 7772 KB Output is correct
19 Correct 2 ms 7872 KB Output is correct
20 Correct 2 ms 7772 KB Output is correct
21 Correct 47 ms 11456 KB Output is correct
22 Correct 41 ms 11732 KB Output is correct
23 Correct 39 ms 11216 KB Output is correct
24 Correct 42 ms 11984 KB Output is correct
25 Correct 42 ms 11456 KB Output is correct
26 Correct 41 ms 11716 KB Output is correct
27 Correct 41 ms 11728 KB Output is correct
28 Correct 40 ms 11728 KB Output is correct
29 Correct 47 ms 12164 KB Output is correct
30 Execution timed out 2037 ms 17092 KB Time limit exceeded
31 Halted 0 ms 0 KB -