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Submission #377895

# Submission time Handle Problem Language Result Execution time Memory
377895 2021-03-15T12:57:12 Z ACmachine Examination (JOI19_examination) C++17
100 / 100
 1725 ms 7916 KB 
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;

typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;

#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)

const double EPS = 1e-9;
const int MOD = 1e9+7;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};

void DBG(){cout << "]" << endl;}
template<typename T, typename ...U> void DBG(const T& head, const U... args){ cout << head << "; "; DBG(args...); }
#define dbg(...) cout << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__);
#define chk() cout << "Check at line(" << __LINE__ << ") hit." << endl;

template<class T, unsigned int U>
ostream& operator<<(ostream& out, const array<T, U> &v){out << "[";  REP(i, U) out << v[i] << ", ";  out << "]"; return out;}
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "[";  REP(i, v.size()) out << v[i] << ", ";  out << "]"; return out;}

template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }

template<typename T>
struct fenwick{
    vector<T> tree;
    int n;
    fenwick(int _n) : n(_n){
        tree.resize(n + 5, 0);
    }
    void upd(int pos, T val){
        pos++;
        for(int i = pos; i <= n; i += (i & -i))
            tree[i] += val;
    }
    ll pq(int r){
        ll res = 0;
        for(int i = r; i > 0; i -= (i & -i))
            res += tree[i];
        return res;
    }
    ll query(int l, int r){
        return pq(r) - pq(l);
    }
};


int main(){
 	ios_base::sync_with_stdio(false);
 	cin.tie(NULL); cout.tie(NULL);
    int n, q;
    cin >> n >> q;
    vector<array<int, 2>> points(n);
    vector<array<int, 2>> points2(n);
    vector<int> sum_comp(n);
    vector<int> sum(n);
    REP(i, n){
        cin >> points[i][0] >> points2[i][0];
        points[i][1] = points2[i][1] = i;
        sum_comp[i] = points[i][0] + points2[i][0];
        sum[i] = sum_comp[i];
    }
    const int block = 512;
    sort(all(points));
    sort(all(points2));
    vector<int> compressed_sum(n);
    vector<int> x_comp(n), y_comp(n);
    REP(i, n){
        x_comp[i] = points[i][0]; y_comp[i] = points2[i][0];
    }
    sort(all(sum_comp));
    x_comp.erase(unique(all(x_comp)), x_comp.end());
    y_comp.erase(unique(all(y_comp)), y_comp.end());
    sum_comp.erase(unique(all(sum_comp)), sum_comp.end());
    REP(i, n){
        compressed_sum[i] = lower_bound(all(sum_comp), sum[i]) - sum_comp.begin();
        points[i][0] = lower_bound(all(x_comp), points[i][0]) - x_comp.begin();
        points2[i][0] = lower_bound(all(y_comp), points2[i][0]) - y_comp.begin();
    }
    struct query{
        int x, y, z, id;
    };
    vector<query> queries(q);
    REP(i, q){
        cin >> queries[i].x >> queries[i].y >> queries[i].z;
        queries[i].id = i;
        queries[i].z = lower_bound(all(sum_comp), queries[i].z) - sum_comp.begin();
        queries[i].x = lower_bound(all(x_comp), queries[i].x) - x_comp.begin();
        array<int, 2> to_search = {queries[i].x, -INF};
        queries[i].x = lower_bound(all(points), to_search) - points.begin();
        queries[i].y = lower_bound(all(y_comp), queries[i].y) - y_comp.begin();
        to_search[0] = queries[i].y;
        queries[i].y = lower_bound(all(points2), to_search) - points2.begin();
    }
    auto comp = [&](query &lhs, query &rhs){
        if((lhs.x >> 9)  == (rhs.x >> 9)){
            return lhs.y < rhs.y;
        }
        else{
            return lhs.x < rhs.x;
        }
    };
    sort(all(queries), comp);
    fenwick<int> ft(n + 10);
    vector<int> cnt(n, 0);
    int xpointer = n; int ypointer = n;
    auto move_x_left = [&](){
        xpointer--;
        int id = points[xpointer][1];
        cnt[id]++;
        if(cnt[id] == 2){
            ft.upd(compressed_sum[id], 1);
        }
    };
    auto move_x_right = [&](){
        int id = points[xpointer][1];
        cnt[id]--;
        if(cnt[id] == 1){
            ft.upd(compressed_sum[id], -1);
        }
        xpointer++;
    };
    auto move_y_left = [&](){
        ypointer--;
        int id = points2[ypointer][1];
        cnt[id]++;
        if(cnt[id] == 2){
            ft.upd(compressed_sum[id], 1);
        }
    };
    auto move_y_right = [&](){
        int id = points2[ypointer][1];
        cnt[id]--;
        if(cnt[id] == 1){
            ft.upd(compressed_sum[id], -1);
        }
        ypointer++;
    };
    vector<int> ans(q, 0);
    REP(i, queries.size()){
        auto que = queries[i];
        while(xpointer > que.x)
            move_x_left();
        while(xpointer < que.x)
            move_x_right();
        while(ypointer > que.y)
            move_y_left();
        while(ypointer < que.y)
            move_y_right();
        ans[que.id] = ft.query(que.z, n + 5);
    }
    REP(i, q){
        cout << ans[i] << "\n";
    }
    return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:19:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<main()::query>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 | #define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
      |                                        ^
examination.cpp:21:18: note: in expansion of macro 'FOR'
   21 | #define REP(i,b) FOR(i,0,b,1)
      |                  ^~~
examination.cpp:173:5: note: in expansion of macro 'REP'
  173 |     REP(i, queries.size()){
      |     ^~~
examination.cpp:96:15: warning: unused variable 'block' [-Wunused-variable]
   96 |     const int block = 512;
      |               ^~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 13 ms 688 KB Output is correct
8 Correct 13 ms 748 KB Output is correct
9 Correct 13 ms 688 KB Output is correct
10 Correct 12 ms 620 KB Output is correct
11 Correct 10 ms 620 KB Output is correct
12 Correct 10 ms 620 KB Output is correct
13 Correct 13 ms 640 KB Output is correct
14 Correct 13 ms 620 KB Output is correct
15 Correct 13 ms 620 KB Output is correct
16 Correct 4 ms 620 KB Output is correct
17 Correct 10 ms 620 KB Output is correct
18 Correct 3 ms 560 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1665 ms 7404 KB Output is correct
2 Correct 1654 ms 7916 KB Output is correct
3 Correct 1660 ms 7568 KB Output is correct
4 Correct 1234 ms 7612 KB Output is correct
5 Correct 221 ms 7660 KB Output is correct
6 Correct 158 ms 7532 KB Output is correct
7 Correct 715 ms 7660 KB Output is correct
8 Correct 896 ms 7668 KB Output is correct
9 Correct 803 ms 7568 KB Output is correct
10 Correct 160 ms 7404 KB Output is correct
11 Correct 1209 ms 7532 KB Output is correct
12 Correct 83 ms 7276 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1665 ms 7404 KB Output is correct
2 Correct 1654 ms 7916 KB Output is correct
3 Correct 1660 ms 7568 KB Output is correct
4 Correct 1234 ms 7612 KB Output is correct
5 Correct 221 ms 7660 KB Output is correct
6 Correct 158 ms 7532 KB Output is correct
7 Correct 715 ms 7660 KB Output is correct
8 Correct 896 ms 7668 KB Output is correct
9 Correct 803 ms 7568 KB Output is correct
10 Correct 160 ms 7404 KB Output is correct
11 Correct 1209 ms 7532 KB Output is correct
12 Correct 83 ms 7276 KB Output is correct
13 Correct 1677 ms 7660 KB Output is correct
14 Correct 1677 ms 7560 KB Output is correct
15 Correct 1670 ms 7640 KB Output is correct
16 Correct 1260 ms 7660 KB Output is correct
17 Correct 245 ms 7788 KB Output is correct
18 Correct 160 ms 7660 KB Output is correct
19 Correct 1697 ms 7532 KB Output is correct
20 Correct 1702 ms 7532 KB Output is correct
21 Correct 1122 ms 7532 KB Output is correct
22 Correct 162 ms 7532 KB Output is correct
23 Correct 1212 ms 7404 KB Output is correct
24 Correct 82 ms 7276 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 13 ms 688 KB Output is correct
8 Correct 13 ms 748 KB Output is correct
9 Correct 13 ms 688 KB Output is correct
10 Correct 12 ms 620 KB Output is correct
11 Correct 10 ms 620 KB Output is correct
12 Correct 10 ms 620 KB Output is correct
13 Correct 13 ms 640 KB Output is correct
14 Correct 13 ms 620 KB Output is correct
15 Correct 13 ms 620 KB Output is correct
16 Correct 4 ms 620 KB Output is correct
17 Correct 10 ms 620 KB Output is correct
18 Correct 3 ms 560 KB Output is correct
19 Correct 1665 ms 7404 KB Output is correct
20 Correct 1654 ms 7916 KB Output is correct
21 Correct 1660 ms 7568 KB Output is correct
22 Correct 1234 ms 7612 KB Output is correct
23 Correct 221 ms 7660 KB Output is correct
24 Correct 158 ms 7532 KB Output is correct
25 Correct 715 ms 7660 KB Output is correct
26 Correct 896 ms 7668 KB Output is correct
27 Correct 803 ms 7568 KB Output is correct
28 Correct 160 ms 7404 KB Output is correct
29 Correct 1209 ms 7532 KB Output is correct
30 Correct 83 ms 7276 KB Output is correct
31 Correct 1677 ms 7660 KB Output is correct
32 Correct 1677 ms 7560 KB Output is correct
33 Correct 1670 ms 7640 KB Output is correct
34 Correct 1260 ms 7660 KB Output is correct
35 Correct 245 ms 7788 KB Output is correct
36 Correct 160 ms 7660 KB Output is correct
37 Correct 1697 ms 7532 KB Output is correct
38 Correct 1702 ms 7532 KB Output is correct
39 Correct 1122 ms 7532 KB Output is correct
40 Correct 162 ms 7532 KB Output is correct
41 Correct 1212 ms 7404 KB Output is correct
42 Correct 82 ms 7276 KB Output is correct
43 Correct 1725 ms 7668 KB Output is correct
44 Correct 1688 ms 7540 KB Output is correct
45 Correct 1709 ms 7660 KB Output is correct
46 Correct 1256 ms 7540 KB Output is correct
47 Correct 249 ms 7660 KB Output is correct
48 Correct 157 ms 7404 KB Output is correct
49 Correct 754 ms 7660 KB Output is correct
50 Correct 939 ms 7660 KB Output is correct
51 Correct 836 ms 7640 KB Output is correct
52 Correct 185 ms 7404 KB Output is correct
53 Correct 1195 ms 7532 KB Output is correct