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Submission #157173

# Submission time Handle Problem Language Result Execution time Memory
157173 2019-10-10T01:44:03 Z Flying_dragon_02 Examination (JOI19_examination) C++14
100 / 100
 2492 ms 162480 KB 
#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second
#define pb push_back
#define mp make_pair

typedef pair<int, int> ii;

const int inf = 1e9 + 1;

const int N = 1e5 + 5;

vector<int> f[2 * N], bit[2 * N];

vector<pair<int, ii>> Sd;

vector<int> X, Y;

vector<pair<ii, ii>> E;

int n, q, ans[N];

void fakeup(int a, int b) {
    int x = lower_bound(X.begin(), X.end(), a) - X.begin();
    while(x > 0) {
        int y = lower_bound(Y.begin(), Y.end(), b) - Y.begin();
        while(y > 0) {
            f[x].pb(y);
            y -= y & (-y);
        }
        x -= x & (-x);
    }
}

void fakeget(int a, int b) {
    int x = lower_bound(X.begin(), X.end(), a) - X.begin();
    while(x < 2 * N) {
        int y = lower_bound(Y.begin(), Y.end(), b) - Y.begin();
        while(y < Y.size()) {
            f[x].pb(y);
            y += y & (-y);
        }
        x += x & (-x);
    }
}

void up(int a, int b) {
   // a = lower_bound(X.begin(), X.end(), a) - X.begin();
    b = lower_bound(Y.begin(), Y.end(), b) - Y.begin();
    int x = lower_bound(X.begin(), X.end(), a) - X.begin();
    while(x > 0) {
        int y = lower_bound(f[x].begin(), f[x].end(), b) - f[x].begin();
        while(y > 0) {
            bit[x][y]++;
            y -= y & (-y);
        }
        x -= x & (-x);
    }
}

int get(int a, int b) {
    //a = lower_bound(X.begin(), X.end(), a) - X.begin();
    b = lower_bound(Y.begin(), Y.end(), b) - Y.begin();
    int sum = 0;
    int x = lower_bound(X.begin(), X.end(), a) - X.begin();
    while(x < 2 * N) {
        int y = lower_bound(f[x].begin(), f[x].end(), b) - f[x].begin();
        //cout << y << " " << f[x].size() << "\n";
        while(y < f[x].size()) {
           // cout << x << " " << y << " " << bit[x].size() << " " << X.size() << "\n";
            sum += bit[x][y];
            y += y & (-y);
        }
        x += x & (-x);
    }
    return sum;
}

int main() {
    //cin.tie(0), ios_base::sync_with_stdio(0);
    for(int i = 0; i < 2 * N; i++)
        f[i].pb(-1);
    cin >> n >> q;
    X.pb(-1);
    Y.pb(-1);
    for(int i = 1; i <= n; i++) {
        int s, t;
        cin >> s >> t;
        int val = s + t;
        X.pb(s);
        Y.pb(t);
        Sd.pb({val, {s, t}});
    }
    sort(Sd.begin(), Sd.end());
    for(int i = 1; i <= q; i++) {
        int x, y, z;
        cin >> x >> y >> z;
        X.pb(x);
        Y.pb(y);
        E.pb({{z, i}, {x, y}});
    }
    sort(E.begin(), E.end());
    sort(X.begin(), X.end());
    X.erase(unique(X.begin(), X.end()), X.end());
    sort(Y.begin(), Y.end());
    Y.erase(unique(Y.begin(), Y.end()), Y.end());
    int ptr = Sd.size() - 1;
    for(int i = E.size() - 1; i >= 0; i--) {
        while(ptr >= 0 && E[i].fi.fi <= Sd[ptr].fi) {
            fakeup(Sd[ptr].se.fi, Sd[ptr].se.se);
            ptr--;
        }
        fakeget(E[i].se.fi, E[i].se.se);
    }
    for(int i = 0; i < 2 * N; i++) {
        sort(f[i].begin(), f[i].end());
        f[i].erase(unique(f[i].begin(), f[i].end()), f[i].end());
        bit[i].resize(f[i].size() + 5, 0);
    }
    ptr = Sd.size() - 1;
    for(int i = E.size() - 1; i >= 0; i--) {
        while(ptr >= 0 && E[i].fi.fi <= Sd[ptr].fi) {
            up(Sd[ptr].se.fi, Sd[ptr].se.se);
            ptr--;
        }
        ans[E[i].fi.se] = get(E[i].se.fi, E[i].se.se);
    }
    for(int i = 1; i <= q; i++)
        cout << ans[i] << "\n";
}

Compilation message

examination.cpp: In function 'void fakeget(int, int)':
examination.cpp:42:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while(y < Y.size()) {
               ~~^~~~~~~~~~
examination.cpp: In function 'int get(int, int)':
examination.cpp:72:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while(y < f[x].size()) {
               ~~^~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 22264 KB Output is correct
2 Correct 42 ms 22236 KB Output is correct
3 Correct 47 ms 22264 KB Output is correct
4 Correct 42 ms 22300 KB Output is correct
5 Correct 42 ms 22264 KB Output is correct
6 Correct 42 ms 22264 KB Output is correct
7 Correct 90 ms 24952 KB Output is correct
8 Correct 91 ms 24952 KB Output is correct
9 Correct 91 ms 24952 KB Output is correct
10 Correct 65 ms 23160 KB Output is correct
11 Correct 83 ms 24568 KB Output is correct
12 Correct 56 ms 22940 KB Output is correct
13 Correct 88 ms 24956 KB Output is correct
14 Correct 89 ms 24952 KB Output is correct
15 Correct 88 ms 24952 KB Output is correct
16 Correct 81 ms 24672 KB Output is correct
17 Correct 61 ms 22868 KB Output is correct
18 Correct 54 ms 23000 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2069 ms 136468 KB Output is correct
2 Correct 2065 ms 136256 KB Output is correct
3 Correct 2053 ms 136620 KB Output is correct
4 Correct 662 ms 50704 KB Output is correct
5 Correct 1784 ms 103324 KB Output is correct
6 Correct 431 ms 46356 KB Output is correct
7 Correct 2064 ms 131988 KB Output is correct
8 Correct 2103 ms 139440 KB Output is correct
9 Correct 2126 ms 133932 KB Output is correct
10 Correct 1757 ms 102004 KB Output is correct
11 Correct 511 ms 41328 KB Output is correct
12 Correct 380 ms 43752 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2069 ms 136468 KB Output is correct
2 Correct 2065 ms 136256 KB Output is correct
3 Correct 2053 ms 136620 KB Output is correct
4 Correct 662 ms 50704 KB Output is correct
5 Correct 1784 ms 103324 KB Output is correct
6 Correct 431 ms 46356 KB Output is correct
7 Correct 2064 ms 131988 KB Output is correct
8 Correct 2103 ms 139440 KB Output is correct
9 Correct 2126 ms 133932 KB Output is correct
10 Correct 1757 ms 102004 KB Output is correct
11 Correct 511 ms 41328 KB Output is correct
12 Correct 380 ms 43752 KB Output is correct
13 Correct 2158 ms 135492 KB Output is correct
14 Correct 2110 ms 136148 KB Output is correct
15 Correct 2064 ms 136228 KB Output is correct
16 Correct 697 ms 50916 KB Output is correct
17 Correct 1824 ms 102100 KB Output is correct
18 Correct 440 ms 46276 KB Output is correct
19 Correct 2120 ms 135196 KB Output is correct
20 Correct 2127 ms 135740 KB Output is correct
21 Correct 2176 ms 130520 KB Output is correct
22 Correct 1854 ms 102620 KB Output is correct
23 Correct 510 ms 41464 KB Output is correct
24 Correct 365 ms 43776 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 22264 KB Output is correct
2 Correct 42 ms 22236 KB Output is correct
3 Correct 47 ms 22264 KB Output is correct
4 Correct 42 ms 22300 KB Output is correct
5 Correct 42 ms 22264 KB Output is correct
6 Correct 42 ms 22264 KB Output is correct
7 Correct 90 ms 24952 KB Output is correct
8 Correct 91 ms 24952 KB Output is correct
9 Correct 91 ms 24952 KB Output is correct
10 Correct 65 ms 23160 KB Output is correct
11 Correct 83 ms 24568 KB Output is correct
12 Correct 56 ms 22940 KB Output is correct
13 Correct 88 ms 24956 KB Output is correct
14 Correct 89 ms 24952 KB Output is correct
15 Correct 88 ms 24952 KB Output is correct
16 Correct 81 ms 24672 KB Output is correct
17 Correct 61 ms 22868 KB Output is correct
18 Correct 54 ms 23000 KB Output is correct
19 Correct 2069 ms 136468 KB Output is correct
20 Correct 2065 ms 136256 KB Output is correct
21 Correct 2053 ms 136620 KB Output is correct
22 Correct 662 ms 50704 KB Output is correct
23 Correct 1784 ms 103324 KB Output is correct
24 Correct 431 ms 46356 KB Output is correct
25 Correct 2064 ms 131988 KB Output is correct
26 Correct 2103 ms 139440 KB Output is correct
27 Correct 2126 ms 133932 KB Output is correct
28 Correct 1757 ms 102004 KB Output is correct
29 Correct 511 ms 41328 KB Output is correct
30 Correct 380 ms 43752 KB Output is correct
31 Correct 2158 ms 135492 KB Output is correct
32 Correct 2110 ms 136148 KB Output is correct
33 Correct 2064 ms 136228 KB Output is correct
34 Correct 697 ms 50916 KB Output is correct
35 Correct 1824 ms 102100 KB Output is correct
36 Correct 440 ms 46276 KB Output is correct
37 Correct 2120 ms 135196 KB Output is correct
38 Correct 2127 ms 135740 KB Output is correct
39 Correct 2176 ms 130520 KB Output is correct
40 Correct 1854 ms 102620 KB Output is correct
41 Correct 510 ms 41464 KB Output is correct
42 Correct 365 ms 43776 KB Output is correct
43 Correct 2452 ms 155588 KB Output is correct
44 Correct 2461 ms 155680 KB Output is correct
45 Correct 2492 ms 156220 KB Output is correct
46 Correct 843 ms 53176 KB Output is correct
47 Correct 2090 ms 112148 KB Output is correct
48 Correct 446 ms 45720 KB Output is correct
49 Correct 2489 ms 160480 KB Output is correct
50 Correct 2467 ms 158500 KB Output is correct
51 Correct 2483 ms 162480 KB Output is correct
52 Correct 2083 ms 109364 KB Output is correct
53 Correct 632 ms 44700 KB Output is correct