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Submission #907259

# Submission time Handle Problem Language Result Execution time Memory
907259 2024-01-15T10:26:12 Z a_l_i_r_e_z_a Examination (JOI19_examination) C++17
100 / 100
 903 ms 51540 KB 
// In the name of God

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pii;
typedef pair<ll, ll> pll;

#define pb push_back
#define S second
#define F first
#define mp make_pair
#define smax(x, y) (x) = max((x), (y))
#define smin(x, y) (x) = min((x), (y))
#define all(x) (x).begin(), (x).end()
#define len(x) ((ll)(x).size())

const int maxn = 1e5 + 5;
const ll inf = 1e9 + 7;
int n, q, cur, arr[maxn], ans[maxn];
pll a[maxn];
vector<ll> vec[maxn * 2], fen[maxn * 2];

struct B{
    ll A, B, Z, ind;
} b[maxn];

bool cmp(int i, int j){
    return a[i].F + a[i].S < a[j].F + a[j].S;
}

bool cmp2(B i, B j){
    return i.Z < j.Z;
}

void upd(int p, ll x, int d){
    for(; p; p /= 2){
        int j = lower_bound(all(vec[p]), x) - vec[p].begin();
        for(j++; j < fen[p].size(); j += j & -j) fen[p][j] += d;
    }
}

int get__(int i, int j){
    int res = 0;
    for(; j; j &= j - 1) res += fen[i][j];
    return res;
}

int get_(int i, ll x){
    int j = lower_bound(all(vec[i]), x) - vec[i].begin();
    return get__(i, vec[i].size()) - get__(i, j);
}

int get(int l, int r, ll x){
    int res = 0;
    for(l += n, r += n; l < r; l /= 2, r /= 2){
        if(l & 1) res += get_(l++, x);
        if(r & 1) res += get_(--r, x);
    }
    return res;
}

int32_t main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> n >> q;
    for(int i = 0; i < n; i++){
        cin >> a[i].F >> a[i].S;
        arr[i] = i;
    }
    sort(a, a + n);
    sort(arr, arr + n, cmp);
    for(int i = 0; i < n; i++){
        vec[i + n].pb(a[i].S);
        fen[i + n].resize(2);
    }
    for(int i = n - 1; i; i--){
        vec[i].resize(vec[i * 2].size() + vec[i * 2 + 1].size());
        merge(all(vec[i * 2]), all(vec[i * 2 + 1]), vec[i].begin());
        vec[i].resize(unique(all(vec[i])) - vec[i].begin());
        fen[i].resize(vec[i].size() + 1);
    }
    for(int i = 0; i < n; i++) upd(i + n, a[i].S, 1);
    for(int i = 0; i < q; i++){
        cin >> b[i].A >> b[i].B >> b[i].Z;
        b[i].ind = i;
    }
    sort(b, b + q, cmp2);
    for(int i = 0; i < q; i++){
        while(cur < n && a[arr[cur]].F + a[arr[cur]].S < b[i].Z){
            upd(arr[cur] + n, a[arr[cur]].S, -1);
            cur++;
        }
        int j = lower_bound(a, a + n, mp(b[i].A, 0ll)) - a;
        ans[b[i].ind] += get(j, n, b[i].B);
    }
    for(int i = 0; i < q; i++) cout << ans[i] << '\n';

    return 0;
}

Compilation message

examination.cpp: In function 'void upd(int, ll, int)':
examination.cpp:41:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for(j++; j < fen[p].size(); j += j & -j) fen[p][j] += d;
      |                  ~~^~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12636 KB Output is correct
2 Correct 4 ms 12636 KB Output is correct
3 Correct 3 ms 12636 KB Output is correct
4 Correct 4 ms 12636 KB Output is correct
5 Correct 4 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 11 ms 13660 KB Output is correct
8 Correct 11 ms 13656 KB Output is correct
9 Correct 11 ms 13660 KB Output is correct
10 Correct 8 ms 13404 KB Output is correct
11 Correct 13 ms 13660 KB Output is correct
12 Correct 7 ms 13256 KB Output is correct
13 Correct 11 ms 13912 KB Output is correct
14 Correct 9 ms 13660 KB Output is correct
15 Correct 9 ms 13660 KB Output is correct
16 Correct 9 ms 13708 KB Output is correct
17 Correct 8 ms 13148 KB Output is correct
18 Correct 6 ms 13148 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 484 ms 50288 KB Output is correct
2 Correct 453 ms 50256 KB Output is correct
3 Correct 466 ms 50324 KB Output is correct
4 Correct 209 ms 31820 KB Output is correct
5 Correct 249 ms 49492 KB Output is correct
6 Correct 88 ms 28248 KB Output is correct
7 Correct 390 ms 50168 KB Output is correct
8 Correct 390 ms 50324 KB Output is correct
9 Correct 347 ms 50260 KB Output is correct
10 Correct 185 ms 42576 KB Output is correct
11 Correct 129 ms 27984 KB Output is correct
12 Correct 67 ms 27980 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 484 ms 50288 KB Output is correct
2 Correct 453 ms 50256 KB Output is correct
3 Correct 466 ms 50324 KB Output is correct
4 Correct 209 ms 31820 KB Output is correct
5 Correct 249 ms 49492 KB Output is correct
6 Correct 88 ms 28248 KB Output is correct
7 Correct 390 ms 50168 KB Output is correct
8 Correct 390 ms 50324 KB Output is correct
9 Correct 347 ms 50260 KB Output is correct
10 Correct 185 ms 42576 KB Output is correct
11 Correct 129 ms 27984 KB Output is correct
12 Correct 67 ms 27980 KB Output is correct
13 Correct 782 ms 50332 KB Output is correct
14 Correct 636 ms 50312 KB Output is correct
15 Correct 515 ms 50412 KB Output is correct
16 Correct 241 ms 31992 KB Output is correct
17 Correct 447 ms 49636 KB Output is correct
18 Correct 117 ms 28356 KB Output is correct
19 Correct 861 ms 50332 KB Output is correct
20 Correct 879 ms 50296 KB Output is correct
21 Correct 780 ms 50392 KB Output is correct
22 Correct 202 ms 42620 KB Output is correct
23 Correct 147 ms 28088 KB Output is correct
24 Correct 67 ms 27984 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12636 KB Output is correct
2 Correct 4 ms 12636 KB Output is correct
3 Correct 3 ms 12636 KB Output is correct
4 Correct 4 ms 12636 KB Output is correct
5 Correct 4 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 11 ms 13660 KB Output is correct
8 Correct 11 ms 13656 KB Output is correct
9 Correct 11 ms 13660 KB Output is correct
10 Correct 8 ms 13404 KB Output is correct
11 Correct 13 ms 13660 KB Output is correct
12 Correct 7 ms 13256 KB Output is correct
13 Correct 11 ms 13912 KB Output is correct
14 Correct 9 ms 13660 KB Output is correct
15 Correct 9 ms 13660 KB Output is correct
16 Correct 9 ms 13708 KB Output is correct
17 Correct 8 ms 13148 KB Output is correct
18 Correct 6 ms 13148 KB Output is correct
19 Correct 484 ms 50288 KB Output is correct
20 Correct 453 ms 50256 KB Output is correct
21 Correct 466 ms 50324 KB Output is correct
22 Correct 209 ms 31820 KB Output is correct
23 Correct 249 ms 49492 KB Output is correct
24 Correct 88 ms 28248 KB Output is correct
25 Correct 390 ms 50168 KB Output is correct
26 Correct 390 ms 50324 KB Output is correct
27 Correct 347 ms 50260 KB Output is correct
28 Correct 185 ms 42576 KB Output is correct
29 Correct 129 ms 27984 KB Output is correct
30 Correct 67 ms 27980 KB Output is correct
31 Correct 782 ms 50332 KB Output is correct
32 Correct 636 ms 50312 KB Output is correct
33 Correct 515 ms 50412 KB Output is correct
34 Correct 241 ms 31992 KB Output is correct
35 Correct 447 ms 49636 KB Output is correct
36 Correct 117 ms 28356 KB Output is correct
37 Correct 861 ms 50332 KB Output is correct
38 Correct 879 ms 50296 KB Output is correct
39 Correct 780 ms 50392 KB Output is correct
40 Correct 202 ms 42620 KB Output is correct
41 Correct 147 ms 28088 KB Output is correct
42 Correct 67 ms 27984 KB Output is correct
43 Correct 846 ms 51540 KB Output is correct
44 Correct 903 ms 51436 KB Output is correct
45 Correct 630 ms 51540 KB Output is correct
46 Correct 222 ms 31996 KB Output is correct
47 Correct 415 ms 51308 KB Output is correct
48 Correct 107 ms 28096 KB Output is correct
49 Correct 555 ms 51276 KB Output is correct
50 Correct 718 ms 51284 KB Output is correct
51 Correct 485 ms 51536 KB Output is correct
52 Correct 346 ms 51224 KB Output is correct
53 Correct 156 ms 28208 KB Output is correct