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Submission #217306

# Submission time Handle Problem Language Result Execution time Memory
217306 2020-03-29T11:45:52 Z my99n Examination (JOI19_examination) C++14
100 / 100
 430 ms 12016 KB 
#include<bits/stdc++.h>
using namespace std;

struct E { long long a, b, c, t, i; } a[200100];
long long ans[100100];

auto sortall = [](E&a, E&b) {
    if (a.a != b.a) return a.a > b.a;
    if (a.b != b.b) return a.b > b.b;
    if (a.c != b.c) return a.c > b.c;
    return a.t > b.t;
};
auto sortb = [](E&a, E&b) {return a.b > b.b;};

int fw[200100]; 
stack<pair<int,int>> h;
void add (int a, int v) { h.push({a, v}); for (int i = a; i > 0; i-=(i&-i)) fw[i]+=v; }
long long query (int a) {long long ans = 0; for (int i = a; i <= 200000; i+=(i&-i)) ans+=fw[i]; return ans;}
void clear () { while (!h.empty()) {auto t = h.top(); h.pop(); add(t.first, -t.second); h.pop();}}

vector<int> sum;
int coord (int x) { return int(lower_bound(sum.begin(), sum.end() ,x) - sum.begin() + 1); }

void CDQ (int l, int r) {
    if (l == r) return;
    int m = (l+r)/2;
    CDQ(l, m); CDQ(m+1, r);
    sort(a+l, a+m+1, sortb); sort(a+m+1, a+r+1, sortb);
    int i = l, j = m+1;
    clear();
    while (i <= m and j <= r) {
        if (a[i].b >= a[j].b) {
            if (a[i].t == 0) {i++; continue;} 
            add(a[i].c, 1);
            i++;
        }
        else {
            if (a[j].i == -1) { j++; continue; }
            ans[a[j].i] += query(a[j].c); 
            j++;
        }
    }
    while (j <= r) {
        if (a[j].i == -1) { j++; continue; }
        ans[a[j].i] += query(a[j].c); 
        j++;
    }
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n, q; cin >> n >> q;
    int cnt = 0;
    for (int i = 0; i < n; i++) {
        long long s, t; cin >> s >> t;
        a[++cnt] = {s+1, t+1, s+t+1, 1, -1};
        sum.push_back(s+t+1);
    }
    for (int i = 0; i < q; i++) {
        long long x, y, z; cin >> x >> y >> z;
        a[++cnt] = {x+1, y+1, z+1, 0, i};
        sum.push_back(z+1);
    }
    sort(sum.begin(), sum.end());
    // sum.resize(unique(sum.begin(), sum.end())-sum.begin());
    for (int i = 1; i <= cnt; i++) a[i].c = coord(a[i].c);

    sort(a+1, a+cnt+1, sortall);
    CDQ(1, cnt);
    for (int i = 0; i < q; i++) cout << ans[i] << '\n';
    return 0;
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 13 ms 640 KB Output is correct
9 Correct 12 ms 768 KB Output is correct
10 Correct 11 ms 768 KB Output is correct
11 Correct 11 ms 768 KB Output is correct
12 Correct 9 ms 768 KB Output is correct
13 Correct 12 ms 768 KB Output is correct
14 Correct 12 ms 768 KB Output is correct
15 Correct 12 ms 768 KB Output is correct
16 Correct 9 ms 640 KB Output is correct
17 Correct 10 ms 768 KB Output is correct
18 Correct 8 ms 640 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 384 ms 11248 KB Output is correct
2 Correct 384 ms 11116 KB Output is correct
3 Correct 383 ms 11116 KB Output is correct
4 Correct 261 ms 11120 KB Output is correct
5 Correct 293 ms 11292 KB Output is correct
6 Correct 190 ms 10988 KB Output is correct
7 Correct 360 ms 11632 KB Output is correct
8 Correct 358 ms 11248 KB Output is correct
9 Correct 363 ms 11624 KB Output is correct
10 Correct 231 ms 10864 KB Output is correct
11 Correct 231 ms 10992 KB Output is correct
12 Correct 163 ms 10476 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 384 ms 11248 KB Output is correct
2 Correct 384 ms 11116 KB Output is correct
3 Correct 383 ms 11116 KB Output is correct
4 Correct 261 ms 11120 KB Output is correct
5 Correct 293 ms 11292 KB Output is correct
6 Correct 190 ms 10988 KB Output is correct
7 Correct 360 ms 11632 KB Output is correct
8 Correct 358 ms 11248 KB Output is correct
9 Correct 363 ms 11624 KB Output is correct
10 Correct 231 ms 10864 KB Output is correct
11 Correct 231 ms 10992 KB Output is correct
12 Correct 163 ms 10476 KB Output is correct
13 Correct 410 ms 11504 KB Output is correct
14 Correct 410 ms 11636 KB Output is correct
15 Correct 380 ms 11120 KB Output is correct
16 Correct 288 ms 11760 KB Output is correct
17 Correct 307 ms 11500 KB Output is correct
18 Correct 183 ms 10992 KB Output is correct
19 Correct 406 ms 11504 KB Output is correct
20 Correct 405 ms 11760 KB Output is correct
21 Correct 391 ms 11628 KB Output is correct
22 Correct 242 ms 10864 KB Output is correct
23 Correct 240 ms 10992 KB Output is correct
24 Correct 157 ms 10348 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 13 ms 640 KB Output is correct
9 Correct 12 ms 768 KB Output is correct
10 Correct 11 ms 768 KB Output is correct
11 Correct 11 ms 768 KB Output is correct
12 Correct 9 ms 768 KB Output is correct
13 Correct 12 ms 768 KB Output is correct
14 Correct 12 ms 768 KB Output is correct
15 Correct 12 ms 768 KB Output is correct
16 Correct 9 ms 640 KB Output is correct
17 Correct 10 ms 768 KB Output is correct
18 Correct 8 ms 640 KB Output is correct
19 Correct 384 ms 11248 KB Output is correct
20 Correct 384 ms 11116 KB Output is correct
21 Correct 383 ms 11116 KB Output is correct
22 Correct 261 ms 11120 KB Output is correct
23 Correct 293 ms 11292 KB Output is correct
24 Correct 190 ms 10988 KB Output is correct
25 Correct 360 ms 11632 KB Output is correct
26 Correct 358 ms 11248 KB Output is correct
27 Correct 363 ms 11624 KB Output is correct
28 Correct 231 ms 10864 KB Output is correct
29 Correct 231 ms 10992 KB Output is correct
30 Correct 163 ms 10476 KB Output is correct
31 Correct 410 ms 11504 KB Output is correct
32 Correct 410 ms 11636 KB Output is correct
33 Correct 380 ms 11120 KB Output is correct
34 Correct 288 ms 11760 KB Output is correct
35 Correct 307 ms 11500 KB Output is correct
36 Correct 183 ms 10992 KB Output is correct
37 Correct 406 ms 11504 KB Output is correct
38 Correct 405 ms 11760 KB Output is correct
39 Correct 391 ms 11628 KB Output is correct
40 Correct 242 ms 10864 KB Output is correct
41 Correct 240 ms 10992 KB Output is correct
42 Correct 157 ms 10348 KB Output is correct
43 Correct 430 ms 11504 KB Output is correct
44 Correct 416 ms 11504 KB Output is correct
45 Correct 426 ms 11544 KB Output is correct
46 Correct 300 ms 11500 KB Output is correct
47 Correct 326 ms 11500 KB Output is correct
48 Correct 198 ms 10864 KB Output is correct
49 Correct 408 ms 12016 KB Output is correct
50 Correct 406 ms 11504 KB Output is correct
51 Correct 413 ms 11884 KB Output is correct
52 Correct 263 ms 11248 KB Output is correct
53 Correct 247 ms 10992 KB Output is correct