oj.uz

Submission #208190

# Submission time Handle Problem Language Result Execution time Memory
208190 2020-03-10T08:29:23 Z paradox Examination (JOI19_examination) C++17
20 / 100
 401 ms 43748 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <set>
#include <map>
#include <cstring>
#include <string>
#include <cmath>
#include <cassert>
#include <ctime>
#include <algorithm>
#include <sstream>
#include <list>
#include <queue>
#include <deque>
#include <stack>
#include <cstdlib>
#include <cstdio>
#include <iterator>
#include <functional>
#include <unordered_set>
#include <unordered_map>
using namespace std;
 
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define pii pair<int, int>
#define vi vector<int>
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
 
typedef long long ll;
typedef short inth;
 
const int N = 8e5;
const int M = N + 7;
const int MOD = 1e9 + 7;
const ll INF = 1e16 + 17;

map<int, int> px, py;

struct Point {
    int x, y;
    int power;
    int id;

    int comx, comy;

    Point(int x, int y, int id, int new_power = -1) : 
            x(x), y(y), power(new_power), id(id), comx(0), comy(0) {
        if (new_power == -1)
            power = x + y;
    };

    void compress() {
        comx = px[x];
        comy = py[y];
    }
};

vector<Point> p, w[2];

int n, m;

inline void read() {
    scanf("%d %d", &n, &m);

    for (int i = 1; i <= n; ++i) {
        int cx, cy;
        scanf("%d %d", &cx, &cy);

        p.pb(Point(cx, cy, i));
    }

    for (int i = 1; i <= m; ++i) {
        int cx, cy, cs;
        scanf("%d %d %d", &cx, &cy, &cs);

        if (cx + cy >= cs)
            w[0].pb(Point(cx, cy, i, cs));
        else
            w[1].pb(Point(cx, cy, i, cs));
    }
}

inline void compress() {
    vector<int> ordx, ordy;

    for (int i = 0; i < n; ++i) {
        ordx.pb(p[i].x);
        ordy.pb(p[i].y);
    }

    for (int j = 0; j < 2; ++j)
        for (int i = 0; i < sz(w[j]); ++i) {
            ordx.pb(w[j][i].x);
            ordy.pb(w[j][i].y);
        }

    sort(all(ordx));
    sort(all(ordy));

    int timx = 0, timy = 0;
    for (int i = 0; i < sz(ordx); ++i) {
        if (!i || ordx[i] != ordx[i - 1])
            px[ordx[i]] = ++timx;
        if (!i || ordy[i] != ordy[i - 1])
            py[ordy[i]] = ++timy;
    }

    for (int i = 0; i < n; ++i)
        p[i].compress();
    for (int i = 0; i < sz(w[0]); ++i)
        w[0][i].compress();
    for (int i = 0; i < sz(w[1]); ++i)
        w[1][i].compress();
}

struct Tree {
    int g[M];

    void build() {
        for (int i = 0; i < M; ++i)
            g[i] = 0;
    }

    void upd(int pos, int val, int v = 1, int tl = 1, int tr = N) {
        if (tl == tr) {
            g[v] += val;
            return;
        }

        int tm = (tl + tr) >> 1;

        if (pos <= tm)
            upd(pos, val, v << 1, tl, tm);
        else
            upd(pos, val, v << 1 | 1, tm + 1, tr);

        g[v] = g[v << 1] + g[v << 1 | 1];
    }

    int get(int l, int r, int v = 1, int tl = 1, int tr = N) {
        if (tr < l || r < tl)
            return 0;
        
        if (l <= tl && tr <= r)
            return g[v];
        
        int tm = (tl + tr) >> 1;
        
        int f = get(l, r, v << 1, tl, tm);
        int s = get(l, r, v << 1 | 1, tm + 1, tr);

        return f + s;
    }

} tree[2];

inline bool cmpX(const Point& a, const Point& b) {
    return a.x > b.x;
}

int ans[M];

inline void solve1() {
    sort(w[0].begin(), w[0].end(), cmpX);
    sort(all(p), cmpX);

    int j = 0;
    tree[0].build();

    for (int i = 0; i < sz(w[0]); ++i) {
        while (j < sz(p) && p[j].x >= w[0][i].x) {
            tree[0].upd(p[j].comy, 1);
            ++j;
        }

        int res = tree[0].get(w[0][i].comy, N);

        ans[w[0][i].id] = res;
    }
}

inline bool cmpPower(const Point& a, const Point& b) {
    return a.power > b.power;
}

inline void solve2() {
    sort(w[1].begin(), w[1].end(), cmpPower);
    sort(all(p), cmpPower);

    int j = 0;
    tree[0].build();
    tree[1].build();

    for (int i = 0; i < sz(w[1]); ++i) {
        while (j < sz(p) && p[j].power >= w[1][i].power) {

            tree[0].upd(p[j].comx, 1);
            tree[1].upd(p[j].comy, 1);

            ++j;
        }

        int res = tree[0].get(1, w[1][i].comx - 1) + tree[1].get(1, w[1][i].comy - 1);

        ans[w[1][i].id] = j - res;

    }
}

inline void out() {
    for (int i = 1; i <= m; ++i)
        printf("%d\n", ans[i]);
}

int main() {

    read();

    compress();
    
    solve1();
    solve2();

    out();

    return 0;
}

Compilation message

examination.cpp: In function 'void read()':
examination.cpp:69:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~~
examination.cpp:73:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &cx, &cy);
         ~~~~~^~~~~~~~~~~~~~~~~~~
examination.cpp:80:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d", &cx, &cy, &cs);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 2.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 13048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 379 ms 22236 KB Output is correct
2 Correct 389 ms 21980 KB Output is correct
3 Correct 384 ms 22180 KB Output is correct
4 Correct 231 ms 17888 KB Output is correct
5 Correct 240 ms 18016 KB Output is correct
6 Correct 131 ms 12368 KB Output is correct
7 Correct 339 ms 21080 KB Output is correct
8 Correct 333 ms 21112 KB Output is correct
9 Correct 297 ms 20184 KB Output is correct
10 Correct 232 ms 17888 KB Output is correct
11 Correct 213 ms 17756 KB Output is correct
12 Correct 110 ms 11992 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 379 ms 22236 KB Output is correct
2 Correct 389 ms 21980 KB Output is correct
3 Correct 384 ms 22180 KB Output is correct
4 Correct 231 ms 17888 KB Output is correct
5 Correct 240 ms 18016 KB Output is correct
6 Correct 131 ms 12368 KB Output is correct
7 Correct 339 ms 21080 KB Output is correct
8 Correct 333 ms 21112 KB Output is correct
9 Correct 297 ms 20184 KB Output is correct
10 Correct 232 ms 17888 KB Output is correct
11 Correct 213 ms 17756 KB Output is correct
12 Correct 110 ms 11992 KB Output is correct
13 Runtime error 401 ms 43748 KB Execution killed with signal 11 (could be triggered by violating memory limits)
14 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Runtime error 16 ms 13048 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -