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답안 #839416

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
839416 2023-08-30T02:15:45 Z vjudge1 Examination (JOI19_examination) C++17
100 / 100
 351 ms 32836 KB 
#include <bits/stdc++.h>
using namespace std;

const int maxn = 2e5 + 5;
const int INF = 2e9 + 5;

int n, q;

pair<int, int> A[maxn];

pair<int, int> cp[maxn];

vector<int> FW[maxn], fake[maxn];
vector<int> qq[maxn];

pair<int, int> pos[maxn];
int ans[maxn];

void fadd(int x, int y) {
    for(x; x <= n; x += x&(-x)){
        fake[x].push_back(y);
    }
}

void add(int x, int y){
    for(x; x <= n; x += x&(-x)){
        for(int idx = upper_bound(fake[x].begin(), fake[x].end(), y) - fake[x].begin() - 1; idx < fake[x].size(); idx += idx&(-idx)) {
            FW[x][idx]++;
        }
    }
}

int query(int x, int y){
    int re = 0;
    for(x; x > 0; x -= x&(-x)) {
        for(int idx = upper_bound(fake[x].begin(), fake[x].end(), y) - fake[x].begin() - 1; idx > 0; idx -= idx&(-idx)) {
            re += FW[x][idx];
        }
    }
    return re;
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> q;
    for (int i = 1; i <= n; i++)
    {
        cin >> A[i].first >> A[i].second;
        A[i].first *= -1;
        A[i].second *= -1;
    }
    sort(A + 1, A + n + 1);
    for(int i = 1; i <= n; i++){
        cp[i] = {A[i].second, i};
    }
    sort(cp + 1, cp + n + 1);
    for (int i = 1; i <= q; i++)
    {
        int x, y, c;
        cin >> x >> y >> c;
        x *= -1;
        y *= -1;
        c *= -1;
        qq[upper_bound(A + 1, A + n + 1, make_pair(x, n)) - A-1].push_back(i);
        pos[i] = {upper_bound(cp+1, cp+n+1, make_pair(y, n)) - cp - 1, c};
    }
    for(int i = 1; i <= n; i++){
        // cout << cp[i].first << endl;
        A[cp[i].second] = {i, A[cp[i].second].first + A[cp[i].second].second};
    }
    for(int i = 1; i <= n; i++){
        fadd(A[i].first, A[i].second);
    }
    for(int i = 1; i <= n; i++){
        fake[i].push_back(-INF);
        sort(fake[i].begin(), fake[i].end());
        fake[i].erase(unique(fake[i].begin(), fake[i].end()), fake[i].end());
        FW[i].assign(fake[i].size(), 0);
    }
    for(int i = 1; i <= n; i++){
        add(A[i].first, A[i].second);
        for(auto v: qq[i]){
            ans[v] = query(pos[v].first, pos[v].second);
        }
    }
    for(int i = 1; i <= q; i++)cout << ans[i] << "\n";
}

Compilation message

examination.cpp: In function 'void fadd(int, int)':
examination.cpp:20:9: warning: statement has no effect [-Wunused-value]
   20 |     for(x; x <= n; x += x&(-x)){
      |         ^
examination.cpp: In function 'void add(int, int)':
examination.cpp:26:9: warning: statement has no effect [-Wunused-value]
   26 |     for(x; x <= n; x += x&(-x)){
      |         ^
examination.cpp:27:97: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |         for(int idx = upper_bound(fake[x].begin(), fake[x].end(), y) - fake[x].begin() - 1; idx < fake[x].size(); idx += idx&(-idx)) {
      |                                                                                             ~~~~^~~~~~~~~~~~~~~~
examination.cpp: In function 'int query(int, int)':
examination.cpp:35:9: warning: statement has no effect [-Wunused-value]
   35 |     for(x; x > 0; x -= x&(-x)) {
      |         ^

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 6 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 12 ms 14900 KB Output is correct
8 Correct 12 ms 14804 KB Output is correct
9 Correct 12 ms 14804 KB Output is correct
10 Correct 13 ms 14804 KB Output is correct
11 Correct 10 ms 14804 KB Output is correct
12 Correct 9 ms 14804 KB Output is correct
13 Correct 11 ms 14804 KB Output is correct
14 Correct 11 ms 14804 KB Output is correct
15 Correct 12 ms 14804 KB Output is correct
16 Correct 10 ms 14804 KB Output is correct
17 Correct 10 ms 14804 KB Output is correct
18 Correct 8 ms 14804 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 311 ms 32588 KB Output is correct
2 Correct 301 ms 32576 KB Output is correct
3 Correct 291 ms 32596 KB Output is correct
4 Correct 214 ms 32576 KB Output is correct
5 Correct 205 ms 30780 KB Output is correct
6 Correct 95 ms 29120 KB Output is correct
7 Correct 281 ms 31732 KB Output is correct
8 Correct 275 ms 32600 KB Output is correct
9 Correct 252 ms 31844 KB Output is correct
10 Correct 172 ms 30404 KB Output is correct
11 Correct 183 ms 31664 KB Output is correct
12 Correct 70 ms 28744 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 311 ms 32588 KB Output is correct
2 Correct 301 ms 32576 KB Output is correct
3 Correct 291 ms 32596 KB Output is correct
4 Correct 214 ms 32576 KB Output is correct
5 Correct 205 ms 30780 KB Output is correct
6 Correct 95 ms 29120 KB Output is correct
7 Correct 281 ms 31732 KB Output is correct
8 Correct 275 ms 32600 KB Output is correct
9 Correct 252 ms 31844 KB Output is correct
10 Correct 172 ms 30404 KB Output is correct
11 Correct 183 ms 31664 KB Output is correct
12 Correct 70 ms 28744 KB Output is correct
13 Correct 328 ms 32600 KB Output is correct
14 Correct 323 ms 32588 KB Output is correct
15 Correct 297 ms 32584 KB Output is correct
16 Correct 245 ms 32472 KB Output is correct
17 Correct 227 ms 30784 KB Output is correct
18 Correct 99 ms 29132 KB Output is correct
19 Correct 326 ms 32596 KB Output is correct
20 Correct 342 ms 32624 KB Output is correct
21 Correct 310 ms 32192 KB Output is correct
22 Correct 172 ms 30480 KB Output is correct
23 Correct 178 ms 31572 KB Output is correct
24 Correct 71 ms 28744 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 6 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 12 ms 14900 KB Output is correct
8 Correct 12 ms 14804 KB Output is correct
9 Correct 12 ms 14804 KB Output is correct
10 Correct 13 ms 14804 KB Output is correct
11 Correct 10 ms 14804 KB Output is correct
12 Correct 9 ms 14804 KB Output is correct
13 Correct 11 ms 14804 KB Output is correct
14 Correct 11 ms 14804 KB Output is correct
15 Correct 12 ms 14804 KB Output is correct
16 Correct 10 ms 14804 KB Output is correct
17 Correct 10 ms 14804 KB Output is correct
18 Correct 8 ms 14804 KB Output is correct
19 Correct 311 ms 32588 KB Output is correct
20 Correct 301 ms 32576 KB Output is correct
21 Correct 291 ms 32596 KB Output is correct
22 Correct 214 ms 32576 KB Output is correct
23 Correct 205 ms 30780 KB Output is correct
24 Correct 95 ms 29120 KB Output is correct
25 Correct 281 ms 31732 KB Output is correct
26 Correct 275 ms 32600 KB Output is correct
27 Correct 252 ms 31844 KB Output is correct
28 Correct 172 ms 30404 KB Output is correct
29 Correct 183 ms 31664 KB Output is correct
30 Correct 70 ms 28744 KB Output is correct
31 Correct 328 ms 32600 KB Output is correct
32 Correct 323 ms 32588 KB Output is correct
33 Correct 297 ms 32584 KB Output is correct
34 Correct 245 ms 32472 KB Output is correct
35 Correct 227 ms 30784 KB Output is correct
36 Correct 99 ms 29132 KB Output is correct
37 Correct 326 ms 32596 KB Output is correct
38 Correct 342 ms 32624 KB Output is correct
39 Correct 310 ms 32192 KB Output is correct
40 Correct 172 ms 30480 KB Output is correct
41 Correct 178 ms 31572 KB Output is correct
42 Correct 71 ms 28744 KB Output is correct
43 Correct 339 ms 32772 KB Output is correct
44 Correct 338 ms 32836 KB Output is correct
45 Correct 326 ms 32752 KB Output is correct
46 Correct 240 ms 32792 KB Output is correct
47 Correct 245 ms 31764 KB Output is correct
48 Correct 98 ms 28860 KB Output is correct
49 Correct 351 ms 31940 KB Output is correct
50 Correct 316 ms 32808 KB Output is correct
51 Correct 300 ms 31932 KB Output is correct
52 Correct 190 ms 31464 KB Output is correct
53 Correct 182 ms 32704 KB Output is correct