oj.uz

Submission #1078655

# Submission time Handle Problem Language Result Execution time Memory
1078655 2024-08-28T03:15:07 Z doducanh Examination (JOI19_examination) C++14
43 / 100
 1571 ms 309240 KB 
///breaker
#pragma GCC optimize("O3")
#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;

#define ordered_set tree<pair<int,int>, null_type,less<pair<int,int> >, rb_tree_tag,tree_order_statistics_node_update>

#define ll long long
#define fi first
#define se second
#define ii pair<int,int>
#define mp make_pair
#define in(x) freopen(x,"r",stdin)
#define out(x) freopen(x,"w",stdout)
#define bit(x,i) ((x>>i)&1)
#define lc (id<<1)
#define rc ((id<<1)^1)
const int maxn=1e5+7;
const int sz=350;
struct fenwick
{
    vector <int> fen;
    int n;
    fenwick(int _n=1e5)
    {
        n=_n;
        fen.assign(n+5,0);
    }
    void add(int pos)
    {
        for(;pos>0;pos-=pos&-pos) fen[pos]++;
        return;
    }
    int get(int pos)
    {
        if (!pos) return 0;
        int ans=0;
        for(;pos<=n;pos+=pos&-pos) ans+=fen[pos];
        return ans;
    }
}t[sz+3];
struct Data
{
    int x,y,z,id;
};
int n,q;
Data a[maxn];
Data qu[maxn];
int ans[maxn];
ordered_set s[maxn];
vector<int>vx;
vector<int>vy;
int pos(int x,vector<int>&v)
{
    return lower_bound(v.begin(),v.end(),x)-v.begin()+1;
}
bool cmp(Data a,Data b)
{
    return a.z>b.z;
}
void sol(void){
    cin>>n>>q;

    for(int i=1;i<=n;i++){
        cin>>a[i].x>>a[i].y;
        vx.push_back(a[i].x);
        vy.push_back(a[i].y);
        a[i].z=a[i].x+a[i].y;
    }
    for(int i=1;i<=q;i++){
        cin>>qu[i].x>>qu[i].y>>qu[i].z;
        qu[i].id=i;
    }
    sort(vx.begin(),vx.end());
    sort(vy.begin(),vy.end());
    vx.erase(unique(vx.begin(),vx.end()),vx.end());
    vy.erase(unique(vy.begin(),vy.end()),vy.end());
    sort(a+1,a+n+1,cmp);
    sort(qu+1,qu+q+1,cmp);
    int l=1;

    for(int i=1;i<=n;i++){
        int pos1=pos(a[i].x,vx);
        int pos2=pos(a[i].y,vy);
        t[(pos1-1)/sz].add(pos2);
        s[pos1].insert({pos2,i});
        if(i<n&&a[i].z==a[i+1].z)continue;
        while(l<=q&&(i==n||qu[l].z>a[i+1].z)){
            if(qu[l].z>a[i].z){
                l++;
                continue;
            }
            pos1=pos(qu[l].x,vx);
            pos2=pos(qu[l].y,vy);
            int tmp=0;
            for(int block=(pos1-1)/sz+1; block<=(vx.size()-1)/sz; block++)tmp+=t[block].get(pos2);
            for(int els=pos1; els<=((pos1-1)/sz+1)*sz; els++)tmp+=s[els].size()-s[els].order_of_key({pos2,0});
            ans[qu[l].id]=tmp;
            l++;
        }
    }
    for(int i=1;i<=q;i++){
        cout<<ans[i]<<"\n";
    }
}
signed main(void)
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t=1;
    while(t--){
        sol();
    }
    // you should actually read the stuff at the bottom
    return 0;
}
/* stuff you should look for
 * int overflow, array bounds
 * special cases (n=1?)
 * do smth instead of nothing and stay organized
 * WRITE STUFF DOWN
 * DON'T GET STUCK ON ONE APPROACH
 */

Compilation message

examination.cpp: In function 'void sol()':
examination.cpp:99:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |             for(int block=(pos1-1)/sz+1; block<=(vx.size()-1)/sz; block++)tmp+=t[block].get(pos2);
      |                                          ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 148304 KB Output is correct
2 Correct 66 ms 148304 KB Output is correct
3 Correct 62 ms 148308 KB Output is correct
4 Correct 69 ms 148304 KB Output is correct
5 Correct 64 ms 148308 KB Output is correct
6 Correct 73 ms 148304 KB Output is correct
7 Correct 69 ms 148820 KB Output is correct
8 Correct 71 ms 148732 KB Output is correct
9 Correct 68 ms 148816 KB Output is correct
10 Correct 71 ms 148816 KB Output is correct
11 Correct 70 ms 148820 KB Output is correct
12 Correct 68 ms 148816 KB Output is correct
13 Correct 70 ms 148820 KB Output is correct
14 Correct 70 ms 148816 KB Output is correct
15 Correct 68 ms 148820 KB Output is correct
16 Correct 67 ms 148820 KB Output is correct
17 Correct 67 ms 148820 KB Output is correct
18 Correct 67 ms 148760 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1167 ms 159536 KB Output is correct
2 Correct 1104 ms 159536 KB Output is correct
3 Correct 1138 ms 159608 KB Output is correct
4 Correct 737 ms 159604 KB Output is correct
5 Correct 333 ms 159560 KB Output is correct
6 Correct 243 ms 159776 KB Output is correct
7 Correct 1571 ms 159608 KB Output is correct
8 Correct 724 ms 159468 KB Output is correct
9 Correct 897 ms 159552 KB Output is correct
10 Correct 217 ms 159348 KB Output is correct
11 Correct 618 ms 159348 KB Output is correct
12 Correct 199 ms 159096 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1167 ms 159536 KB Output is correct
2 Correct 1104 ms 159536 KB Output is correct
3 Correct 1138 ms 159608 KB Output is correct
4 Correct 737 ms 159604 KB Output is correct
5 Correct 333 ms 159560 KB Output is correct
6 Correct 243 ms 159776 KB Output is correct
7 Correct 1571 ms 159608 KB Output is correct
8 Correct 724 ms 159468 KB Output is correct
9 Correct 897 ms 159552 KB Output is correct
10 Correct 217 ms 159348 KB Output is correct
11 Correct 618 ms 159348 KB Output is correct
12 Correct 199 ms 159096 KB Output is correct
13 Correct 1109 ms 159440 KB Output is correct
14 Correct 1153 ms 159504 KB Output is correct
15 Correct 1096 ms 159440 KB Output is correct
16 Correct 664 ms 159520 KB Output is correct
17 Correct 290 ms 159608 KB Output is correct
18 Correct 244 ms 159604 KB Output is correct
19 Correct 953 ms 159604 KB Output is correct
20 Correct 1041 ms 159452 KB Output is correct
21 Correct 973 ms 159664 KB Output is correct
22 Correct 214 ms 159348 KB Output is correct
23 Correct 587 ms 159352 KB Output is correct
24 Correct 199 ms 159092 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 148304 KB Output is correct
2 Correct 66 ms 148304 KB Output is correct
3 Correct 62 ms 148308 KB Output is correct
4 Correct 69 ms 148304 KB Output is correct
5 Correct 64 ms 148308 KB Output is correct
6 Correct 73 ms 148304 KB Output is correct
7 Correct 69 ms 148820 KB Output is correct
8 Correct 71 ms 148732 KB Output is correct
9 Correct 68 ms 148816 KB Output is correct
10 Correct 71 ms 148816 KB Output is correct
11 Correct 70 ms 148820 KB Output is correct
12 Correct 68 ms 148816 KB Output is correct
13 Correct 70 ms 148820 KB Output is correct
14 Correct 70 ms 148816 KB Output is correct
15 Correct 68 ms 148820 KB Output is correct
16 Correct 67 ms 148820 KB Output is correct
17 Correct 67 ms 148820 KB Output is correct
18 Correct 67 ms 148760 KB Output is correct
19 Correct 1167 ms 159536 KB Output is correct
20 Correct 1104 ms 159536 KB Output is correct
21 Correct 1138 ms 159608 KB Output is correct
22 Correct 737 ms 159604 KB Output is correct
23 Correct 333 ms 159560 KB Output is correct
24 Correct 243 ms 159776 KB Output is correct
25 Correct 1571 ms 159608 KB Output is correct
26 Correct 724 ms 159468 KB Output is correct
27 Correct 897 ms 159552 KB Output is correct
28 Correct 217 ms 159348 KB Output is correct
29 Correct 618 ms 159348 KB Output is correct
30 Correct 199 ms 159096 KB Output is correct
31 Correct 1109 ms 159440 KB Output is correct
32 Correct 1153 ms 159504 KB Output is correct
33 Correct 1096 ms 159440 KB Output is correct
34 Correct 664 ms 159520 KB Output is correct
35 Correct 290 ms 159608 KB Output is correct
36 Correct 244 ms 159604 KB Output is correct
37 Correct 953 ms 159604 KB Output is correct
38 Correct 1041 ms 159452 KB Output is correct
39 Correct 973 ms 159664 KB Output is correct
40 Correct 214 ms 159348 KB Output is correct
41 Correct 587 ms 159352 KB Output is correct
42 Correct 199 ms 159092 KB Output is correct
43 Runtime error 257 ms 309240 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -