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Submission #217320

# Submission time Handle Problem Language Result Execution time Memory
217320 2020-03-29T12:02:07 Z my99n Examination (JOI19_examination) C++14
100 / 100
 422 ms 13300 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 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 13 ms 896 KB Output is correct
8 Correct 12 ms 896 KB Output is correct
9 Correct 12 ms 896 KB Output is correct
10 Correct 11 ms 896 KB Output is correct
11 Correct 12 ms 768 KB Output is correct
12 Correct 10 ms 768 KB Output is correct
13 Correct 12 ms 896 KB Output is correct
14 Correct 12 ms 896 KB Output is correct
15 Correct 12 ms 896 KB Output is correct
16 Correct 11 ms 768 KB Output is correct
17 Correct 11 ms 896 KB Output is correct
18 Correct 8 ms 768 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 375 ms 12656 KB Output is correct
2 Correct 375 ms 12652 KB Output is correct
3 Correct 375 ms 12656 KB Output is correct
4 Correct 260 ms 12580 KB Output is correct
5 Correct 335 ms 12656 KB Output is correct
6 Correct 215 ms 12140 KB Output is correct
7 Correct 357 ms 12908 KB Output is correct
8 Correct 370 ms 12800 KB Output is correct
9 Correct 353 ms 12916 KB Output is correct
10 Correct 333 ms 12396 KB Output is correct
11 Correct 236 ms 12524 KB Output is correct
12 Correct 160 ms 11376 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 375 ms 12656 KB Output is correct
2 Correct 375 ms 12652 KB Output is correct
3 Correct 375 ms 12656 KB Output is correct
4 Correct 260 ms 12580 KB Output is correct
5 Correct 335 ms 12656 KB Output is correct
6 Correct 215 ms 12140 KB Output is correct
7 Correct 357 ms 12908 KB Output is correct
8 Correct 370 ms 12800 KB Output is correct
9 Correct 353 ms 12916 KB Output is correct
10 Correct 333 ms 12396 KB Output is correct
11 Correct 236 ms 12524 KB Output is correct
12 Correct 160 ms 11376 KB Output is correct
13 Correct 400 ms 13076 KB Output is correct
14 Correct 398 ms 12944 KB Output is correct
15 Correct 366 ms 12656 KB Output is correct
16 Correct 285 ms 13012 KB Output is correct
17 Correct 361 ms 13036 KB Output is correct
18 Correct 208 ms 12012 KB Output is correct
19 Correct 405 ms 13040 KB Output is correct
20 Correct 392 ms 12908 KB Output is correct
21 Correct 385 ms 13300 KB Output is correct
22 Correct 324 ms 12400 KB Output is correct
23 Correct 234 ms 12400 KB Output is correct
24 Correct 153 ms 11376 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 13 ms 896 KB Output is correct
8 Correct 12 ms 896 KB Output is correct
9 Correct 12 ms 896 KB Output is correct
10 Correct 11 ms 896 KB Output is correct
11 Correct 12 ms 768 KB Output is correct
12 Correct 10 ms 768 KB Output is correct
13 Correct 12 ms 896 KB Output is correct
14 Correct 12 ms 896 KB Output is correct
15 Correct 12 ms 896 KB Output is correct
16 Correct 11 ms 768 KB Output is correct
17 Correct 11 ms 896 KB Output is correct
18 Correct 8 ms 768 KB Output is correct
19 Correct 375 ms 12656 KB Output is correct
20 Correct 375 ms 12652 KB Output is correct
21 Correct 375 ms 12656 KB Output is correct
22 Correct 260 ms 12580 KB Output is correct
23 Correct 335 ms 12656 KB Output is correct
24 Correct 215 ms 12140 KB Output is correct
25 Correct 357 ms 12908 KB Output is correct
26 Correct 370 ms 12800 KB Output is correct
27 Correct 353 ms 12916 KB Output is correct
28 Correct 333 ms 12396 KB Output is correct
29 Correct 236 ms 12524 KB Output is correct
30 Correct 160 ms 11376 KB Output is correct
31 Correct 400 ms 13076 KB Output is correct
32 Correct 398 ms 12944 KB Output is correct
33 Correct 366 ms 12656 KB Output is correct
34 Correct 285 ms 13012 KB Output is correct
35 Correct 361 ms 13036 KB Output is correct
36 Correct 208 ms 12012 KB Output is correct
37 Correct 405 ms 13040 KB Output is correct
38 Correct 392 ms 12908 KB Output is correct
39 Correct 385 ms 13300 KB Output is correct
40 Correct 324 ms 12400 KB Output is correct
41 Correct 234 ms 12400 KB Output is correct
42 Correct 153 ms 11376 KB Output is correct
43 Correct 422 ms 12704 KB Output is correct
44 Correct 410 ms 12528 KB Output is correct
45 Correct 418 ms 12736 KB Output is correct
46 Correct 291 ms 12912 KB Output is correct
47 Correct 383 ms 13164 KB Output is correct
48 Correct 217 ms 11888 KB Output is correct
49 Correct 392 ms 13040 KB Output is correct
50 Correct 404 ms 12528 KB Output is correct
51 Correct 394 ms 13044 KB Output is correct
52 Correct 368 ms 12912 KB Output is correct
53 Correct 242 ms 12396 KB Output is correct