oj.uz

Submission #166032

# Submission time Handle Problem Language Result Execution time Memory
166032 2019-11-30T09:40:38 Z Akashi Examination (JOI19_examination) C++14
2 / 100
 1551 ms 269884 KB 
#include <bits/stdc++.h>
using namespace std;

struct grades{
    int x, y, z;
    bool operator < (const grades &aux)const{
        if(z != aux.z) return z > aux.z;
        if(x != aux.x) return x > aux.x;
        return y > aux.y;
    }
};
struct teacher{
    int x, y, z, p;
    bool operator < (const teacher &aux)const{
        if(z != aux.z) return z > aux.z;
        if(x != aux.x) return x > aux.x;
        return y > aux.y;
    }
};

grades a[100005];
teacher b[100005];
int ans[100005];

int n, q;

struct node{
    int tip, val;
    int left, right;
};

node Tree[16000005];

int y, nx, ny, NR;
void update(int x, int nod, int st, int dr){
    if(st == dr){
        if(Tree[nod].tip == 1){
            if(Tree[nod].val == 0){
                Tree[nod].val = ++NR;
                Tree[NR].tip = 0;
            }
            update(y, Tree[nod].val, 1, ny);
        }
        else ++Tree[nod].val;
        return ;
    }

    int mij = (st + dr) / 2;
    if(x <= mij){
        if(Tree[nod].left == 0){
            Tree[nod].left = ++NR;
            Tree[NR].tip = Tree[nod].tip;
        }
        update(x, Tree[nod].left, st, mij);
    }
    else{
        if(Tree[nod].right == 0){
            Tree[nod].right = ++NR;
            Tree[NR].tip = Tree[nod].tip;
        }
        update(x, Tree[nod].right, mij + 1, dr);
    }

    if(Tree[nod].tip == 1){
        if(Tree[nod].val == 0){
            Tree[nod].val = ++NR;
            Tree[NR].tip = 0;
        }
        update(y, Tree[nod].val, 1, ny);
    }
    else Tree[nod].val = Tree[Tree[nod].left].val + Tree[Tree[nod].right].val;

}

int yr, yl;
int query(int x, int y, int nod, int st, int dr){
    if(x <= st && dr <= y){
        if(Tree[nod].tip == 1){
            if(Tree[nod].val == 0) return 0;
            return query(yl, yr, Tree[nod].val, 1, ny);
        }
        else return Tree[nod].val;
    }

    int mij = (st + dr) / 2;

    int val = 0;
    if(x <= mij){
        if(Tree[nod].left) val += query(x, y, Tree[nod].left, st, mij);
    }
    if(mij + 1 <= y){
        if(Tree[nod].right) val += query(x, y, Tree[nod].right, mij + 1, dr);
    }

    return val;
}

set <int> sx, sy;
map <int, int> fx, fy;

int main()
{
    scanf("%d%d", &n, &q);
    for(int i = 1; i <= n ; ++i){
        scanf("%d%d", &a[i].x, &a[i].y);
        a[i].z = a[i].x + a[i].y;
        sx.insert(a[i].x); sy.insert(a[i].y);
    }

    for(int i = 1; i <= q ; ++i){
        scanf("%d%d%d", &b[i].x, &b[i].y, &b[i].z), b[i].p = i;
        sx.insert(b[i].x); sy.insert(b[i].y);
    }

    for(auto it : sx) fx[it] = ++nx;
    for(auto it : sy) fy[it] = ++ny;

    for(int i = 1; i <= n ; ++i) a[i].x = fx[a[i].x], a[i].y = fy[a[i].y];
    for(int i = 1; i <= q ; ++i) b[i].x = fx[b[i].x], b[i].y = fy[b[i].y];

    sort(a + 1, a + n + 1);
    sort(b + 1, b + q + 1);

    int j = 1;
    Tree[++NR].tip = 1;
    for(int i = 1; i <= q ; ++i){
        while(j <= n && a[j].z >= b[i].z){
            y = a[j].y;
            update(a[j].x, 1, 1, nx);
            ++j;
        }

        yl = b[i].y; yr = ny;
        ans[b[i].p] = query(b[i].x, nx, 1, 1, nx);
    }

//    nx = 200000; ny = 200000;
//    srand(time(NULL));
//    for(int i = 1; i <= 100000 ; ++i){
//        y = rand() % (200000) + 1;
//        int x = rand() % (200000) + 1;
//        update(x, 1, 1, nx);
//        if(i % 1000 == 0) cerr << NR << endl;
//    }
//
//    cerr << NR;

    for(int i = 1; i <= q ; ++i) printf("%d\n", ans[i]);

    return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:103:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~
examination.cpp:105:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &a[i].x, &a[i].y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:111:51: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d", &b[i].x, &b[i].y, &b[i].z), b[i].p = i;
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 26 ms 7032 KB Output is correct
8 Correct 27 ms 7160 KB Output is correct
9 Correct 27 ms 7032 KB Output is correct
10 Correct 12 ms 2040 KB Output is correct
11 Correct 12 ms 1912 KB Output is correct
12 Correct 5 ms 492 KB Output is correct
13 Correct 28 ms 7132 KB Output is correct
14 Correct 26 ms 7160 KB Output is correct
15 Correct 30 ms 7164 KB Output is correct
16 Correct 9 ms 1276 KB Output is correct
17 Correct 10 ms 1400 KB Output is correct
18 Correct 4 ms 376 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1551 ms 269884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1551 ms 269884 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 26 ms 7032 KB Output is correct
8 Correct 27 ms 7160 KB Output is correct
9 Correct 27 ms 7032 KB Output is correct
10 Correct 12 ms 2040 KB Output is correct
11 Correct 12 ms 1912 KB Output is correct
12 Correct 5 ms 492 KB Output is correct
13 Correct 28 ms 7132 KB Output is correct
14 Correct 26 ms 7160 KB Output is correct
15 Correct 30 ms 7164 KB Output is correct
16 Correct 9 ms 1276 KB Output is correct
17 Correct 10 ms 1400 KB Output is correct
18 Correct 4 ms 376 KB Output is correct
19 Incorrect 1551 ms 269884 KB Output isn't correct
20 Halted 0 ms 0 KB -