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답안 #377894

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
377894 2021-03-15T12:52:16 Z ACmachine Examination (JOI19_examination) C++17
100 / 100
 1669 ms 12120 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;
    }
    T pq(int r){
        T res = 0;
        for(int i = r; i > 0; i -= (i & -i))
            res += tree[i];
        return res;
    }
    T 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 = 600;
    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 / block == rhs.x / block){
            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()){
      |     ^~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 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 15 ms 748 KB Output is correct
8 Correct 18 ms 748 KB Output is correct
9 Correct 14 ms 748 KB Output is correct
10 Correct 14 ms 768 KB Output is correct
11 Correct 12 ms 620 KB Output is correct
12 Correct 13 ms 620 KB Output is correct
13 Correct 14 ms 620 KB Output is correct
14 Correct 14 ms 620 KB Output is correct
15 Correct 14 ms 620 KB Output is correct
16 Correct 6 ms 620 KB Output is correct
17 Correct 12 ms 620 KB Output is correct
18 Correct 3 ms 560 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1575 ms 8172 KB Output is correct
2 Correct 1623 ms 9788 KB Output is correct
3 Correct 1597 ms 9680 KB Output is correct
4 Correct 1226 ms 8956 KB Output is correct
5 Correct 225 ms 8940 KB Output is correct
6 Correct 161 ms 8300 KB Output is correct
7 Correct 792 ms 9708 KB Output is correct
8 Correct 1008 ms 9708 KB Output is correct
9 Correct 942 ms 9716 KB Output is correct
10 Correct 161 ms 8940 KB Output is correct
11 Correct 1190 ms 8828 KB Output is correct
12 Correct 87 ms 7788 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1575 ms 8172 KB Output is correct
2 Correct 1623 ms 9788 KB Output is correct
3 Correct 1597 ms 9680 KB Output is correct
4 Correct 1226 ms 8956 KB Output is correct
5 Correct 225 ms 8940 KB Output is correct
6 Correct 161 ms 8300 KB Output is correct
7 Correct 792 ms 9708 KB Output is correct
8 Correct 1008 ms 9708 KB Output is correct
9 Correct 942 ms 9716 KB Output is correct
10 Correct 161 ms 8940 KB Output is correct
11 Correct 1190 ms 8828 KB Output is correct
12 Correct 87 ms 7788 KB Output is correct
13 Correct 1615 ms 10220 KB Output is correct
14 Correct 1623 ms 10076 KB Output is correct
15 Correct 1591 ms 9696 KB Output is correct
16 Correct 1226 ms 9356 KB Output is correct
17 Correct 257 ms 9324 KB Output is correct
18 Correct 161 ms 8300 KB Output is correct
19 Correct 1603 ms 10132 KB Output is correct
20 Correct 1669 ms 10220 KB Output is correct
21 Correct 1178 ms 10112 KB Output is correct
22 Correct 159 ms 8812 KB Output is correct
23 Correct 1183 ms 8812 KB Output is correct
24 Correct 83 ms 7788 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 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 15 ms 748 KB Output is correct
8 Correct 18 ms 748 KB Output is correct
9 Correct 14 ms 748 KB Output is correct
10 Correct 14 ms 768 KB Output is correct
11 Correct 12 ms 620 KB Output is correct
12 Correct 13 ms 620 KB Output is correct
13 Correct 14 ms 620 KB Output is correct
14 Correct 14 ms 620 KB Output is correct
15 Correct 14 ms 620 KB Output is correct
16 Correct 6 ms 620 KB Output is correct
17 Correct 12 ms 620 KB Output is correct
18 Correct 3 ms 560 KB Output is correct
19 Correct 1575 ms 8172 KB Output is correct
20 Correct 1623 ms 9788 KB Output is correct
21 Correct 1597 ms 9680 KB Output is correct
22 Correct 1226 ms 8956 KB Output is correct
23 Correct 225 ms 8940 KB Output is correct
24 Correct 161 ms 8300 KB Output is correct
25 Correct 792 ms 9708 KB Output is correct
26 Correct 1008 ms 9708 KB Output is correct
27 Correct 942 ms 9716 KB Output is correct
28 Correct 161 ms 8940 KB Output is correct
29 Correct 1190 ms 8828 KB Output is correct
30 Correct 87 ms 7788 KB Output is correct
31 Correct 1615 ms 10220 KB Output is correct
32 Correct 1623 ms 10076 KB Output is correct
33 Correct 1591 ms 9696 KB Output is correct
34 Correct 1226 ms 9356 KB Output is correct
35 Correct 257 ms 9324 KB Output is correct
36 Correct 161 ms 8300 KB Output is correct
37 Correct 1603 ms 10132 KB Output is correct
38 Correct 1669 ms 10220 KB Output is correct
39 Correct 1178 ms 10112 KB Output is correct
40 Correct 159 ms 8812 KB Output is correct
41 Correct 1183 ms 8812 KB Output is correct
42 Correct 83 ms 7788 KB Output is correct
43 Correct 1616 ms 12084 KB Output is correct
44 Correct 1631 ms 12120 KB Output is correct
45 Correct 1610 ms 12032 KB Output is correct
46 Correct 1209 ms 10508 KB Output is correct
47 Correct 282 ms 10668 KB Output is correct
48 Correct 161 ms 8044 KB Output is correct
49 Correct 796 ms 11932 KB Output is correct
50 Correct 1040 ms 11988 KB Output is correct
51 Correct 982 ms 11884 KB Output is correct
52 Correct 194 ms 10348 KB Output is correct
53 Correct 1145 ms 9580 KB Output is correct