oj.uz

Submission #1087229

# Submission time Handle Problem Language Result Execution time Memory
1087229 2024-09-12T10:34:37 Z mispertion Boat (APIO16_boat) C++14
31 / 100
 815 ms 40276 KB 
#include <bits/stdc++.h>

using namespace std;    
#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef long long ll;
#define int ll
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define pb push_back
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mispertion ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define F first
#define S second
#define getlast(s) (*s.rbegin())
#define debg cout << "OK\n"

const ld PI = 3.1415926535;
const int N = 5e5 + 10;
const int M = 1e5 + 10;
int mod = 1e9+7;
const int infi = INT_MAX;
const ll infl = 2e18;
const int P = 505319;
const ld eps = 1e-9;

int mult(int a, int b){
    return a * 1LL * b % mod;
}

int sum(int a, int b){
    a %= mod;
    b %= mod;
    if(a + b >= mod)
        return a + b - mod;
    if(a + b < 0)
        return a + b + mod;
    return a + b;
}

int binpow(int a, int n){
    if (n == 0)
        return 1;
    if (n % 2 == 1){
        return mult(binpow(a, n - 1), a);
    }
    else{
        auto b = binpow(a, n / 2);
        return mult(b, b);
    }
}

int n, l[N], r[N], sm[N], f[N], fi[N];
vector<int> al[N];

int C(int n, int k){
    return mult(f[n], mult(fi[k], fi[n - k]));
}

void solve(){
    cin >> n;
    vector<int> di = {};
    for(int i = 1; i <= n; i++){
        cin >> l[i] >> r[i];
        di.pb(l[i]);
        di.pb(r[i] + 1);
    }
    di.pb(0);
    sort(all(di));
    di.resize(unique(all(di)) - di.begin());
    sm[0] = 1;
    al[0].pb(1);
    for(int i = 1; i <= n; i++){
        int cur = 0;
        for(int j = 0; j < sz(di) - 1; j++){
            int lr = di[j], rr = di[j + 1] - 1;
            int len = rr - lr + 1;
            if(lr >= l[i] && rr <= r[i]){
                al[j].pb(cur);
                int nsm = 0;
                for(int k = 0; k < sz(al[j]); k++){
                    nsm =sum(nsm, mult(C(sz(al[j]) - k - 1 + len, sz(al[j]) - k), al[j][k]));
                }
                cur = sum(cur, sm[j]);
                sm[j] = nsm;
            }else{
                cur = sum(cur, sm[j]);
            }
        }
    }
    int ans = 0;
    for(int i = 0; i < sz(di) - 1; i++)
        ans = sum(ans, sm[i]);
    cout << sum(ans, -1) << '\n';
}   

signed main(){
    mispertion;
    f[0] = 1;
    for(int i = 1; i < N; i++)
        f[i] = mult(f[i - 1], i);
    for(int i = 0; i < N; i++){
        fi[i] = binpow(f[i], mod - 2);
    }
    int t = 1;
    //cin >> t;
    while (t--){
        solve();
    }
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 20048 KB Output is correct
2 Correct 155 ms 19996 KB Output is correct
3 Correct 155 ms 20036 KB Output is correct
4 Correct 156 ms 20052 KB Output is correct
5 Correct 153 ms 19872 KB Output is correct
6 Correct 155 ms 20304 KB Output is correct
7 Correct 155 ms 20064 KB Output is correct
8 Correct 156 ms 19968 KB Output is correct
9 Correct 159 ms 20052 KB Output is correct
10 Correct 156 ms 20024 KB Output is correct
11 Correct 153 ms 20048 KB Output is correct
12 Correct 154 ms 20004 KB Output is correct
13 Correct 155 ms 19896 KB Output is correct
14 Correct 152 ms 20048 KB Output is correct
15 Correct 156 ms 20048 KB Output is correct
16 Correct 158 ms 19932 KB Output is correct
17 Correct 153 ms 19836 KB Output is correct
18 Correct 158 ms 19980 KB Output is correct
19 Correct 153 ms 20044 KB Output is correct
20 Correct 153 ms 20048 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 20048 KB Output is correct
2 Correct 155 ms 19996 KB Output is correct
3 Correct 155 ms 20036 KB Output is correct
4 Correct 156 ms 20052 KB Output is correct
5 Correct 153 ms 19872 KB Output is correct
6 Correct 155 ms 20304 KB Output is correct
7 Correct 155 ms 20064 KB Output is correct
8 Correct 156 ms 19968 KB Output is correct
9 Correct 159 ms 20052 KB Output is correct
10 Correct 156 ms 20024 KB Output is correct
11 Correct 153 ms 20048 KB Output is correct
12 Correct 154 ms 20004 KB Output is correct
13 Correct 155 ms 19896 KB Output is correct
14 Correct 152 ms 20048 KB Output is correct
15 Correct 156 ms 20048 KB Output is correct
16 Correct 158 ms 19932 KB Output is correct
17 Correct 153 ms 19836 KB Output is correct
18 Correct 158 ms 19980 KB Output is correct
19 Correct 153 ms 20044 KB Output is correct
20 Correct 153 ms 20048 KB Output is correct
21 Correct 449 ms 21840 KB Output is correct
22 Correct 450 ms 21832 KB Output is correct
23 Correct 397 ms 21592 KB Output is correct
24 Correct 430 ms 21844 KB Output is correct
25 Correct 446 ms 21588 KB Output is correct
26 Correct 797 ms 22352 KB Output is correct
27 Correct 815 ms 22420 KB Output is correct
28 Correct 810 ms 22188 KB Output is correct
29 Correct 795 ms 22352 KB Output is correct
30 Correct 155 ms 20172 KB Output is correct
31 Correct 152 ms 19872 KB Output is correct
32 Correct 153 ms 19976 KB Output is correct
33 Correct 162 ms 20004 KB Output is correct
34 Correct 153 ms 20048 KB Output is correct
35 Correct 156 ms 20044 KB Output is correct
36 Correct 153 ms 20304 KB Output is correct
37 Correct 159 ms 19988 KB Output is correct
38 Correct 154 ms 20056 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 163 ms 40276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 20048 KB Output is correct
2 Correct 155 ms 19996 KB Output is correct
3 Correct 155 ms 20036 KB Output is correct
4 Correct 156 ms 20052 KB Output is correct
5 Correct 153 ms 19872 KB Output is correct
6 Correct 155 ms 20304 KB Output is correct
7 Correct 155 ms 20064 KB Output is correct
8 Correct 156 ms 19968 KB Output is correct
9 Correct 159 ms 20052 KB Output is correct
10 Correct 156 ms 20024 KB Output is correct
11 Correct 153 ms 20048 KB Output is correct
12 Correct 154 ms 20004 KB Output is correct
13 Correct 155 ms 19896 KB Output is correct
14 Correct 152 ms 20048 KB Output is correct
15 Correct 156 ms 20048 KB Output is correct
16 Correct 158 ms 19932 KB Output is correct
17 Correct 153 ms 19836 KB Output is correct
18 Correct 158 ms 19980 KB Output is correct
19 Correct 153 ms 20044 KB Output is correct
20 Correct 153 ms 20048 KB Output is correct
21 Correct 449 ms 21840 KB Output is correct
22 Correct 450 ms 21832 KB Output is correct
23 Correct 397 ms 21592 KB Output is correct
24 Correct 430 ms 21844 KB Output is correct
25 Correct 446 ms 21588 KB Output is correct
26 Correct 797 ms 22352 KB Output is correct
27 Correct 815 ms 22420 KB Output is correct
28 Correct 810 ms 22188 KB Output is correct
29 Correct 795 ms 22352 KB Output is correct
30 Correct 155 ms 20172 KB Output is correct
31 Correct 152 ms 19872 KB Output is correct
32 Correct 153 ms 19976 KB Output is correct
33 Correct 162 ms 20004 KB Output is correct
34 Correct 153 ms 20048 KB Output is correct
35 Correct 156 ms 20044 KB Output is correct
36 Correct 153 ms 20304 KB Output is correct
37 Correct 159 ms 19988 KB Output is correct
38 Correct 154 ms 20056 KB Output is correct
39 Runtime error 163 ms 40276 KB Execution killed with signal 11
40 Halted 0 ms 0 KB -