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Submission #157174

# Submission time Handle Problem Language Result Execution time Memory
157174 2019-10-10T01:44:52 Z Flying_dragon_02 Examination (JOI19_examination) C++14
100 / 100
 2192 ms 157796 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 43 ms 22388 KB Output is correct
2 Correct 43 ms 22268 KB Output is correct
3 Correct 43 ms 22264 KB Output is correct
4 Correct 43 ms 22256 KB Output is correct
5 Correct 43 ms 22236 KB Output is correct
6 Correct 43 ms 22288 KB Output is correct
7 Correct 82 ms 24940 KB Output is correct
8 Correct 82 ms 24972 KB Output is correct
9 Correct 82 ms 24924 KB Output is correct
10 Correct 58 ms 23160 KB Output is correct
11 Correct 78 ms 24540 KB Output is correct
12 Correct 54 ms 22940 KB Output is correct
13 Correct 82 ms 24924 KB Output is correct
14 Correct 83 ms 24952 KB Output is correct
15 Correct 82 ms 25032 KB Output is correct
16 Correct 77 ms 24572 KB Output is correct
17 Correct 56 ms 22928 KB Output is correct
18 Correct 52 ms 23000 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1911 ms 136068 KB Output is correct
2 Correct 1906 ms 136440 KB Output is correct
3 Correct 1927 ms 136436 KB Output is correct
4 Correct 521 ms 50860 KB Output is correct
5 Correct 1757 ms 103044 KB Output is correct
6 Correct 332 ms 46508 KB Output is correct
7 Correct 1893 ms 132052 KB Output is correct
8 Correct 1946 ms 139540 KB Output is correct
9 Correct 1917 ms 133884 KB Output is correct
10 Correct 1610 ms 101916 KB Output is correct
11 Correct 390 ms 41496 KB Output is correct
12 Correct 269 ms 43868 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1911 ms 136068 KB Output is correct
2 Correct 1906 ms 136440 KB Output is correct
3 Correct 1927 ms 136436 KB Output is correct
4 Correct 521 ms 50860 KB Output is correct
5 Correct 1757 ms 103044 KB Output is correct
6 Correct 332 ms 46508 KB Output is correct
7 Correct 1893 ms 132052 KB Output is correct
8 Correct 1946 ms 139540 KB Output is correct
9 Correct 1917 ms 133884 KB Output is correct
10 Correct 1610 ms 101916 KB Output is correct
11 Correct 390 ms 41496 KB Output is correct
12 Correct 269 ms 43868 KB Output is correct
13 Correct 1940 ms 134756 KB Output is correct
14 Correct 1919 ms 135736 KB Output is correct
15 Correct 1921 ms 136080 KB Output is correct
16 Correct 549 ms 50972 KB Output is correct
17 Correct 1664 ms 102260 KB Output is correct
18 Correct 342 ms 46104 KB Output is correct
19 Correct 1911 ms 134800 KB Output is correct
20 Correct 1930 ms 134308 KB Output is correct
21 Correct 2075 ms 129432 KB Output is correct
22 Correct 1621 ms 102532 KB Output is correct
23 Correct 384 ms 41296 KB Output is correct
24 Correct 268 ms 43792 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 22388 KB Output is correct
2 Correct 43 ms 22268 KB Output is correct
3 Correct 43 ms 22264 KB Output is correct
4 Correct 43 ms 22256 KB Output is correct
5 Correct 43 ms 22236 KB Output is correct
6 Correct 43 ms 22288 KB Output is correct
7 Correct 82 ms 24940 KB Output is correct
8 Correct 82 ms 24972 KB Output is correct
9 Correct 82 ms 24924 KB Output is correct
10 Correct 58 ms 23160 KB Output is correct
11 Correct 78 ms 24540 KB Output is correct
12 Correct 54 ms 22940 KB Output is correct
13 Correct 82 ms 24924 KB Output is correct
14 Correct 83 ms 24952 KB Output is correct
15 Correct 82 ms 25032 KB Output is correct
16 Correct 77 ms 24572 KB Output is correct
17 Correct 56 ms 22928 KB Output is correct
18 Correct 52 ms 23000 KB Output is correct
19 Correct 1911 ms 136068 KB Output is correct
20 Correct 1906 ms 136440 KB Output is correct
21 Correct 1927 ms 136436 KB Output is correct
22 Correct 521 ms 50860 KB Output is correct
23 Correct 1757 ms 103044 KB Output is correct
24 Correct 332 ms 46508 KB Output is correct
25 Correct 1893 ms 132052 KB Output is correct
26 Correct 1946 ms 139540 KB Output is correct
27 Correct 1917 ms 133884 KB Output is correct
28 Correct 1610 ms 101916 KB Output is correct
29 Correct 390 ms 41496 KB Output is correct
30 Correct 269 ms 43868 KB Output is correct
31 Correct 1940 ms 134756 KB Output is correct
32 Correct 1919 ms 135736 KB Output is correct
33 Correct 1921 ms 136080 KB Output is correct
34 Correct 549 ms 50972 KB Output is correct
35 Correct 1664 ms 102260 KB Output is correct
36 Correct 342 ms 46104 KB Output is correct
37 Correct 1911 ms 134800 KB Output is correct
38 Correct 1930 ms 134308 KB Output is correct
39 Correct 2075 ms 129432 KB Output is correct
40 Correct 1621 ms 102532 KB Output is correct
41 Correct 384 ms 41296 KB Output is correct
42 Correct 268 ms 43792 KB Output is correct
43 Correct 2144 ms 151924 KB Output is correct
44 Correct 2146 ms 151400 KB Output is correct
45 Correct 2133 ms 151516 KB Output is correct
46 Correct 616 ms 50076 KB Output is correct
47 Correct 1872 ms 108976 KB Output is correct
48 Correct 344 ms 44820 KB Output is correct
49 Correct 2144 ms 155864 KB Output is correct
50 Correct 2168 ms 153496 KB Output is correct
51 Correct 2192 ms 157796 KB Output is correct
52 Correct 1860 ms 106248 KB Output is correct
53 Correct 448 ms 42440 KB Output is correct