oj.uz

Submission #484382

# Submission time Handle Problem Language Result Execution time Memory
484382 2021-11-03T06:41:46 Z Mahdi Examination (JOI19_examination) C++17
100 / 100
 143 ms 6624 KB 
#include<bits/stdc++.h>
#pragma GCC optimize ("Ofast")
using namespace std;
#define all(v) v.begin(), v.end()
#define pii pair<int, int>
#define F first
#define S second
typedef long long ll;
const int N=1e5+5;
int n, q, s[N], t[N], a[N], aa[N], b[N], bb[N], c[N], cc[N], ans[N];
vector<pair<pii, pii>>v;
vector<pair<pii, int>>w;

bool cmp(const int &x, const int &y){
    return s[x]+t[x]<s[y]+t[y];
}

bool cpp(const int &x, const int &y){
    return s[x]<s[y];
}

bool ppp(const int &x, const int &y){
    return t[x]<t[y];
}

struct fenwick{
    vector<int>bit=vector<int>(n, 0);
    void add(int i){
        for(int j=i;j<n;j|=(j+1))
            ++bit[j];
    }
    int sum(int i){
        int as=0;
        for(int j=i;j>=0;j=(j&(j+1))-1)
            as+=bit[j];
        return as;
    }
};

int bin1(int x){
    if(s[a[n-1]]<x)
        return n;
    int l=0, r=n-1;
    while(r>l){
        int m=(r+l)/2;
        if(s[a[m]]>=x)
            r=m;
        else
            l=m+1;
    }
    return l;
}

int bin2(int x){
    if(t[b[n-1]]<x)
        return n;
    int l=0, r=n-1;
    while(r>l){
        int m=(r+l)/2;
        if(t[b[m]]>=x)
            r=m;
        else
            l=m+1;
    }
    return l;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n>>q;
    for(int i=0;i<n;++i)
        cin>>s[i]>>t[i];
    iota(a, a+n, 0);
    iota(b, b+n, 0);
    iota(c, c+n, 0);
    sort(a, a+n, cpp);
    for(int i=0;i<n;++i)
        aa[a[i]]=i;
    sort(b, b+n, ppp);
    for(int i=0;i<n;++i)
        bb[b[i]]=i;
    sort(c, c+n, cmp);
    for(int i=0;i<n;++i)
        cc[c[i]]=i;
    int x, y, z;
    for(int i=0;i<q;++i){
        cin>>x>>y>>z;
        if(z<=x+y)
            w.push_back({{x, y}, i});
        else
            v.push_back({{z, i}, {x, y}});
    }
    sort(all(v));
    sort(all(w));
    reverse(all(v));
    reverse(all(w));
    fenwick A;
    int j=n-1;
    for(auto u:w){
        while(j>=0 && s[a[j]]>=u.F.F)
            A.add(bb[a[j--]]);
        int x=bin2(u.F.S);
        if(x>=0)
            x=A.sum(x-1);
        ans[u.S]=n-j-1-x;
    }
    j=n-1;
    fill(all(A.bit), 0);
    for(auto u:v){
        while(j>=0 && s[c[j]]+t[c[j]]>=u.F.F)
            A.add(aa[c[j--]]);
        int x=bin1(u.S.F);
        if(x>=0)
            x=A.sum(x-1);
        ans[u.F.S]=n-j-1-x;
    }
    j=n-1;
    fill(all(A.bit), 0);
    for(auto u: v){
        while(j>=0 && s[c[j]]+t[c[j]]>=u.F.F)
            A.add(bb[c[j--]]);
        int x=bin2(u.S.S);
        if(x>=0)
            x=A.sum(x-1);
        ans[u.F.S]-=x;
    }
    for(int i=0;i<q;++i)
        cout<<ans[i]<<'\n';
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 5 ms 460 KB Output is correct
8 Correct 4 ms 460 KB Output is correct
9 Correct 3 ms 460 KB Output is correct
10 Correct 3 ms 460 KB Output is correct
11 Correct 3 ms 460 KB Output is correct
12 Correct 3 ms 460 KB Output is correct
13 Correct 3 ms 460 KB Output is correct
14 Correct 3 ms 460 KB Output is correct
15 Correct 3 ms 460 KB Output is correct
16 Correct 3 ms 460 KB Output is correct
17 Correct 3 ms 460 KB Output is correct
18 Correct 2 ms 460 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 5892 KB Output is correct
2 Correct 117 ms 5840 KB Output is correct
3 Correct 110 ms 5908 KB Output is correct
4 Correct 89 ms 5956 KB Output is correct
5 Correct 88 ms 5864 KB Output is correct
6 Correct 75 ms 5852 KB Output is correct
7 Correct 124 ms 5960 KB Output is correct
8 Correct 104 ms 5972 KB Output is correct
9 Correct 100 ms 5900 KB Output is correct
10 Correct 81 ms 5712 KB Output is correct
11 Correct 81 ms 5724 KB Output is correct
12 Correct 52 ms 5516 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 5892 KB Output is correct
2 Correct 117 ms 5840 KB Output is correct
3 Correct 110 ms 5908 KB Output is correct
4 Correct 89 ms 5956 KB Output is correct
5 Correct 88 ms 5864 KB Output is correct
6 Correct 75 ms 5852 KB Output is correct
7 Correct 124 ms 5960 KB Output is correct
8 Correct 104 ms 5972 KB Output is correct
9 Correct 100 ms 5900 KB Output is correct
10 Correct 81 ms 5712 KB Output is correct
11 Correct 81 ms 5724 KB Output is correct
12 Correct 52 ms 5516 KB Output is correct
13 Correct 135 ms 6100 KB Output is correct
14 Correct 121 ms 6104 KB Output is correct
15 Correct 122 ms 5944 KB Output is correct
16 Correct 105 ms 6100 KB Output is correct
17 Correct 106 ms 6052 KB Output is correct
18 Correct 71 ms 6164 KB Output is correct
19 Correct 129 ms 6072 KB Output is correct
20 Correct 127 ms 6108 KB Output is correct
21 Correct 130 ms 6624 KB Output is correct
22 Correct 82 ms 5712 KB Output is correct
23 Correct 76 ms 5688 KB Output is correct
24 Correct 55 ms 5664 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 5 ms 460 KB Output is correct
8 Correct 4 ms 460 KB Output is correct
9 Correct 3 ms 460 KB Output is correct
10 Correct 3 ms 460 KB Output is correct
11 Correct 3 ms 460 KB Output is correct
12 Correct 3 ms 460 KB Output is correct
13 Correct 3 ms 460 KB Output is correct
14 Correct 3 ms 460 KB Output is correct
15 Correct 3 ms 460 KB Output is correct
16 Correct 3 ms 460 KB Output is correct
17 Correct 3 ms 460 KB Output is correct
18 Correct 2 ms 460 KB Output is correct
19 Correct 110 ms 5892 KB Output is correct
20 Correct 117 ms 5840 KB Output is correct
21 Correct 110 ms 5908 KB Output is correct
22 Correct 89 ms 5956 KB Output is correct
23 Correct 88 ms 5864 KB Output is correct
24 Correct 75 ms 5852 KB Output is correct
25 Correct 124 ms 5960 KB Output is correct
26 Correct 104 ms 5972 KB Output is correct
27 Correct 100 ms 5900 KB Output is correct
28 Correct 81 ms 5712 KB Output is correct
29 Correct 81 ms 5724 KB Output is correct
30 Correct 52 ms 5516 KB Output is correct
31 Correct 135 ms 6100 KB Output is correct
32 Correct 121 ms 6104 KB Output is correct
33 Correct 122 ms 5944 KB Output is correct
34 Correct 105 ms 6100 KB Output is correct
35 Correct 106 ms 6052 KB Output is correct
36 Correct 71 ms 6164 KB Output is correct
37 Correct 129 ms 6072 KB Output is correct
38 Correct 127 ms 6108 KB Output is correct
39 Correct 130 ms 6624 KB Output is correct
40 Correct 82 ms 5712 KB Output is correct
41 Correct 76 ms 5688 KB Output is correct
42 Correct 55 ms 5664 KB Output is correct
43 Correct 140 ms 6136 KB Output is correct
44 Correct 141 ms 6100 KB Output is correct
45 Correct 131 ms 6032 KB Output is correct
46 Correct 112 ms 6128 KB Output is correct
47 Correct 112 ms 6140 KB Output is correct
48 Correct 74 ms 6328 KB Output is correct
49 Correct 134 ms 6116 KB Output is correct
50 Correct 143 ms 6580 KB Output is correct
51 Correct 140 ms 6500 KB Output is correct
52 Correct 104 ms 5932 KB Output is correct
53 Correct 80 ms 5720 KB Output is correct