oj.uz

Submission #715250

# Submission time Handle Problem Language Result Execution time Memory
715250 2023-03-26T09:25:24 Z ismayil Examination (JOI19_examination) C++17
2 / 100
 275 ms 4656 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int MAX = 1e5;
int bit[MAX + 1];
void update(int pos, int val){
    for(int i = pos; i <= MAX; i = i | (i + 1)){
        bit[i] += val;
    }
}
int query(int pos){
    int res = 0;
    for(int i = pos; i >= 0; i = (i & (i + 1)) - 1){
        res += bit[i];
    }
    return res;
}
int query(int l, int r){
    if(l == 0) return query(r);
    return query(r) - query(l - 1);
}
struct event{
    int x, y, idx, type;
};
bool f(event a, event b){
    if(a.x == b.x) a.type < b.type;
    return a.x < b.x;
}
int n, m;
void solve2(){
    vector<event> events;
    for(int i = 0; i < n; i++){
        int x, y;
        cin>>x>>y;
        events.push_back({x, y, -1, 0});
    }
    for(int i = 0; i < m; i++){
        int x, y, z;
        cin>>x>>y>>z;
        events.push_back({x, y, i, 1});
    }
    sort(events.begin(), events.end(), f);
    int ans[m];
    for (int i = m - 1; i >= 0; i--)
    {
        if(events[i].type == 0){
            update(events[i].y, 1);
        }else{
            ans[events[i].idx] = query(events[i].y, MAX);
        }
    }
    for (int i = 0; i < m; i++) cout<<ans[i]<<endl;
}
void solve1(){
    vector<pair<int, int>> p;
    for(int i = 0; i < n; i++){
        int x, y;
        cin>>x>>y;
        p.push_back({x, y});
    }
    for(int i = 0; i < m; i++){
        int x, y, z;
        cin>>x>>y>>z;
        int cnt = 0;
        for(int i = 0; i < n; i++){
            if(p[i].first >= x && p[i].second >= y && p[i].first + p[i].second >= z) cnt++;
        }
        cout<<cnt<<endl;
    }
}
int main(){
    
    cin>>n>>m;
    if(n <= 3000 && m <= 3000) solve1();
    else solve2();
}

Compilation message

examination.cpp: In function 'bool f(event, event)':
examination.cpp:26:27: warning: statement has no effect [-Wunused-value]
   26 |     if(a.x == b.x) a.type < b.type;
      |                    ~~~~~~~^~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 49 ms 372 KB Output is correct
8 Correct 48 ms 472 KB Output is correct
9 Correct 50 ms 340 KB Output is correct
10 Correct 46 ms 372 KB Output is correct
11 Correct 46 ms 372 KB Output is correct
12 Correct 49 ms 364 KB Output is correct
13 Correct 50 ms 368 KB Output is correct
14 Correct 51 ms 356 KB Output is correct
15 Correct 49 ms 368 KB Output is correct
16 Correct 25 ms 368 KB Output is correct
17 Correct 36 ms 368 KB Output is correct
18 Correct 15 ms 360 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 275 ms 4656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 275 ms 4656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 49 ms 372 KB Output is correct
8 Correct 48 ms 472 KB Output is correct
9 Correct 50 ms 340 KB Output is correct
10 Correct 46 ms 372 KB Output is correct
11 Correct 46 ms 372 KB Output is correct
12 Correct 49 ms 364 KB Output is correct
13 Correct 50 ms 368 KB Output is correct
14 Correct 51 ms 356 KB Output is correct
15 Correct 49 ms 368 KB Output is correct
16 Correct 25 ms 368 KB Output is correct
17 Correct 36 ms 368 KB Output is correct
18 Correct 15 ms 360 KB Output is correct
19 Incorrect 275 ms 4656 KB Output isn't correct
20 Halted 0 ms 0 KB -