oj.uz

Submission #375198

# Submission time Handle Problem Language Result Execution time Memory
375198 2021-03-09T04:23:21 Z jass921026 Examination (JOI19_examination) C++14
43 / 100
 298 ms 18164 KB 
#include<bits/stdc++.h>
using namespace std;
#define jizz ios_base::sync_with_stdio(false);cin.tie(NULL);
#define ALL(x) (x).begin(),(x).end()
typedef pair<int,int> pii;
#define F first
#define S second
const int MAXN=1E5+10;
struct student{
    int type, a, b, c, id;
    student(int t, int a, int b, int c, int id):type(t),a(a),b(b),c(c),id(id){};
};
bool cmp(student x, student y){
    if(x.c==y.c) return x.type<y.type;
    return x.c>y.c;
}
int n, q, ans[MAXN];
vector<int> comp;
vector<student> v;
struct BIT{
    int data[MAXN]={0};
    vector<pii> his;
    int lb(int x){
        return x&(-x);
    }
    void modify(int p, int v, bool u=1){
        if(u) his.push_back({p,v});
        //if(u) cout<<"modified "<<p<<" "<<v<<"\n";
        while(p<MAXN){
            data[p]+=v;
            p+=lb(p);
        }
    }
    int query(int p){
        int res=0;
        while(p>0){
            res+=data[p];
            p-=lb(p);
        }
        return res;
    }
    int query(int l, int r){
        //cout<<"queried "<<l<<" "<<r<<"\n";
        int x=query(r)-query(l-1);
        //cout<<"result: "<<x<<"\n";
        return x;
    }
    void undo(){
        for(auto i:his){
            modify(i.F,-i.S,0);
        }
        his.clear();
    }
} bit;
void CDQORZ(int l, int r){
    if(l==r) return;
    int mid=(l+r)/2;
    CDQORZ(l,mid);
    CDQORZ(mid+1,r);
    vector<student> nv;
    int i=l, j=mid+1;
    //cout<<"now on "<<l<<" "<<r<<"\n";
    while(i<=mid||j<=r){
        //cout<<i<<" "<<j<<"\n";
        if(j==r+1){
            nv.push_back(v[i]);
            if(v[i].type==0) bit.modify(v[i].b,1);
            i++;
        } else if(i==mid+1){
            nv.push_back(v[j]);
            if(v[j].type==1) ans[v[j].id]+=bit.query(v[j].b,MAXN-1);
            j++;
        } else if(v[i].a>=v[j].a){
            nv.push_back(v[i]);
            if(v[i].type==0) bit.modify(v[i].b,1);
            i++;
        } else{
            nv.push_back(v[j]);
            if(v[j].type==1) ans[v[j].id]+=bit.query(v[j].b,MAXN-1);
            j++;
        }
    }
    bit.undo();
    for(int k=0;k<nv.size();k++){
        v[l+k]=nv[k];
    }
}
int main(){ jizz
    cin>>n>>q;
    for(int i=0;i<n;i++){
        int s, t;
        cin>>s>>t;
        v.push_back(student(0,s,t,s+t,i));
        comp.push_back(t);
    }
    for(int i=0;i<q;i++){
        int x, y, z;
        cin>>x>>y>>z;
        v.push_back(student(1,x,y,z,i));
        comp.push_back(y);
    }
    sort(ALL(comp));
    comp.erase(unique(ALL(comp)),comp.end());
    for(int i=0;i<n+q;i++){
        v[i].b=lower_bound(ALL(comp),v[i].b)-comp.begin()+1;
    }
    sort(ALL(v),cmp);
    /*for(int i=0;i<n+q;i++){
        cout<<v[i].type<<" "<<v[i].a<<" "<<v[i].b<<" "<<v[i].c<<" "<<v[i].id<<"\n";
    }*/
    CDQORZ(0,n+q-1);
    for(int i=0;i<q;i++){
        cout<<ans[i]<<"\n";
    }
    return 0;
}
/*
5 4
35 100
70 70
45 15
80 40
20 95
20 50 120
10 10 100
60 60 80
0 100 100
*/
/*
10 10
41304 98327
91921 28251
85635 59191
30361 72671
28949 96958
99041 37826
10245 2726
19387 20282
60366 87723
95388 49726
52302 69501 66009
43754 45346 3158
25224 58881 18727
7298 24412 63782
24107 10583 61508
65025 29140 7278
36104 56758 2775
23126 67608 122051
56910 17272 62933
39675 15874 117117
*/

Compilation message

examination.cpp: In function 'void CDQORZ(int, int)':
examination.cpp:84:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<student>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |     for(int k=0;k<nv.size();k++){
      |                 ~^~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 748 KB Output is correct
2 Correct 1 ms 748 KB Output is correct
3 Correct 1 ms 748 KB Output is correct
4 Correct 1 ms 748 KB Output is correct
5 Correct 1 ms 748 KB Output is correct
6 Correct 1 ms 748 KB Output is correct
7 Correct 8 ms 1360 KB Output is correct
8 Correct 9 ms 1360 KB Output is correct
9 Correct 8 ms 1360 KB Output is correct
10 Correct 7 ms 1252 KB Output is correct
11 Correct 8 ms 1252 KB Output is correct
12 Correct 6 ms 1252 KB Output is correct
13 Correct 8 ms 1380 KB Output is correct
14 Correct 8 ms 1360 KB Output is correct
15 Correct 8 ms 1360 KB Output is correct
16 Correct 7 ms 1380 KB Output is correct
17 Correct 7 ms 1252 KB Output is correct
18 Correct 6 ms 1248 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 266 ms 17652 KB Output is correct
2 Correct 267 ms 18164 KB Output is correct
3 Correct 264 ms 18036 KB Output is correct
4 Correct 232 ms 17268 KB Output is correct
5 Correct 248 ms 17524 KB Output is correct
6 Correct 208 ms 16628 KB Output is correct
7 Correct 263 ms 17908 KB Output is correct
8 Correct 257 ms 17908 KB Output is correct
9 Correct 254 ms 17908 KB Output is correct
10 Correct 235 ms 17424 KB Output is correct
11 Correct 217 ms 17268 KB Output is correct
12 Correct 201 ms 16628 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 266 ms 17652 KB Output is correct
2 Correct 267 ms 18164 KB Output is correct
3 Correct 264 ms 18036 KB Output is correct
4 Correct 232 ms 17268 KB Output is correct
5 Correct 248 ms 17524 KB Output is correct
6 Correct 208 ms 16628 KB Output is correct
7 Correct 263 ms 17908 KB Output is correct
8 Correct 257 ms 17908 KB Output is correct
9 Correct 254 ms 17908 KB Output is correct
10 Correct 235 ms 17424 KB Output is correct
11 Correct 217 ms 17268 KB Output is correct
12 Correct 201 ms 16628 KB Output is correct
13 Correct 289 ms 18036 KB Output is correct
14 Correct 295 ms 17140 KB Output is correct
15 Correct 264 ms 17140 KB Output is correct
16 Correct 253 ms 16756 KB Output is correct
17 Correct 279 ms 17012 KB Output is correct
18 Correct 212 ms 16628 KB Output is correct
19 Correct 293 ms 17012 KB Output is correct
20 Correct 298 ms 17012 KB Output is correct
21 Correct 288 ms 16964 KB Output is correct
22 Correct 239 ms 17268 KB Output is correct
23 Correct 219 ms 17396 KB Output is correct
24 Correct 198 ms 16500 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 748 KB Output is correct
2 Correct 1 ms 748 KB Output is correct
3 Correct 1 ms 748 KB Output is correct
4 Correct 1 ms 748 KB Output is correct
5 Correct 1 ms 748 KB Output is correct
6 Correct 1 ms 748 KB Output is correct
7 Correct 8 ms 1360 KB Output is correct
8 Correct 9 ms 1360 KB Output is correct
9 Correct 8 ms 1360 KB Output is correct
10 Correct 7 ms 1252 KB Output is correct
11 Correct 8 ms 1252 KB Output is correct
12 Correct 6 ms 1252 KB Output is correct
13 Correct 8 ms 1380 KB Output is correct
14 Correct 8 ms 1360 KB Output is correct
15 Correct 8 ms 1360 KB Output is correct
16 Correct 7 ms 1380 KB Output is correct
17 Correct 7 ms 1252 KB Output is correct
18 Correct 6 ms 1248 KB Output is correct
19 Correct 266 ms 17652 KB Output is correct
20 Correct 267 ms 18164 KB Output is correct
21 Correct 264 ms 18036 KB Output is correct
22 Correct 232 ms 17268 KB Output is correct
23 Correct 248 ms 17524 KB Output is correct
24 Correct 208 ms 16628 KB Output is correct
25 Correct 263 ms 17908 KB Output is correct
26 Correct 257 ms 17908 KB Output is correct
27 Correct 254 ms 17908 KB Output is correct
28 Correct 235 ms 17424 KB Output is correct
29 Correct 217 ms 17268 KB Output is correct
30 Correct 201 ms 16628 KB Output is correct
31 Correct 289 ms 18036 KB Output is correct
32 Correct 295 ms 17140 KB Output is correct
33 Correct 264 ms 17140 KB Output is correct
34 Correct 253 ms 16756 KB Output is correct
35 Correct 279 ms 17012 KB Output is correct
36 Correct 212 ms 16628 KB Output is correct
37 Correct 293 ms 17012 KB Output is correct
38 Correct 298 ms 17012 KB Output is correct
39 Correct 288 ms 16964 KB Output is correct
40 Correct 239 ms 17268 KB Output is correct
41 Correct 219 ms 17396 KB Output is correct
42 Correct 198 ms 16500 KB Output is correct
43 Incorrect 288 ms 16372 KB Output isn't correct
44 Halted 0 ms 0 KB -