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Submission #656747

# Submission time Handle Problem Language Result Execution time Memory
656747 2022-11-08T07:07:58 Z uylulu Fortune Telling 2 (JOI14_fortune_telling2) C++17
35 / 100
 1008 ms 254428 KB 
#include <bits/stdc++.h>
using namespace std;

#define ld long double
#define ll long long
#define endl "\n"

const int N = 5e5,K = 20;

int a[N + 1],b[N + 1],sign[N + 1];

map<int,int> mp;
vector<int> query;

vector<pair<int,int>> seg[4*N + 1];

void buildST(int id,int l,int r) {
    if(l == r) {
        seg[id] = {{query[l],1}};
        return;
    }
    int mid = (l + r)/2;
    buildST(id*2,l,mid);
    buildST(id*2 + 1,mid + 1,r);

    seg[id] = seg[id*2];
    for(auto u : seg[id*2 + 1]) {
        seg[id].push_back(u);
    }
    sort(seg[id].begin(),seg[id].end());
    
    for(int i = 0;i < seg[id].size();i++) {
        seg[id][i].second = i + 1;
    }
}

int queryST(int id,int l,int r,int u,int v,int val) {
    if(v < l || u > r) return 0;
    
    if(u <= l && v >= r) {
        auto it = lower_bound(seg[id].begin(),seg[id].end(),make_pair(val,(int)-1));
        if(it == seg[id].end()) return 0;

        return (seg[id].size()) - (*it).second + 1;
    }
    int mid = (l + r)/2;
    return queryST(id*2,l,mid,u,v,val) + queryST(id*2 + 1,mid + 1,r,u,v,val);
}

int val[N + 1],lst[N + 1],cnt = 0;
int sparse[N + 1][K + 1],lg[N + 1];

void buildSP() {
    for(int i = 2;i <= N;i++) {
        lg[i] = lg[i/2] + 1;
    }
    for(int i = 0;i <= cnt;i++) {
        sparse[i][0] = lst[i];
    }
    for(int j = 1;j <= K;j++) {
        for(int i = 0;i + (1<<j) <= cnt;i++) {
            sparse[i][j] = max(sparse[i][j - 1],sparse[i + (1<<(j - 1))][j - 1]);
        }
    }
}

int querySP(int l,int r) {
    int len = lg[r - l + 1];
    return max(sparse[l][len],sparse[r - (1<<len) + 1][len]);
}

signed main() {
    // freopen("in.txt","r",stdin);
    // freopen("out.txt","w",stdout);
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);

    int n,k;
    cin>>n>>k;
    for(int i = 1;i <= n;i++) {
        cin>>a[i]>>b[i];
        sign[i] = 0;
        if(a[i] > b[i]) {
            sign[i] = 1;
            swap(a[i],b[i]);
        }
        mp[a[i]] = -1;
        mp[b[i]] = -1;
    }
    for(int i = 0;i < k;i++) {
        int x;
        cin>>x;
        mp[x] = -1;
        query.push_back(x);
    }

    for(auto u : mp) {
        mp[u.first] = cnt;
        val[cnt] = u.first;
        cnt++;
    }
    for(int i = 1;i <= n;i++) {
        a[i] = mp[a[i]];
        b[i] = mp[b[i]];
    }
    for(int i = 0;i < query.size();i++) {
        query[i] = mp[query[i]];
    }
    for(int i = 0;i <= cnt;i++) {
        lst[i] = -1;
    }

    for(int i = 0;i < query.size();i++) {
        lst[query[i]] = max(lst[query[i]],i);
    }

    ll res = 0;
    buildSP();
    buildST(1,0,query.size() - 1);

    // for(int i = 1;i <= n;i++) {
    //     cout<<a[i]<<" "<<b[i]<<endl;
    // }
    // for(auto u : query) {
    //     cout<<u<<endl;
    // }
    for(int i = 1;i <= n;i++) {
        if(a[i] == b[i]) {
            res += val[a[i]];
            continue;
        }
        // cout<<a[i]<<" "<<b[i]<<endl;
        int nw = querySP(a[i],b[i] - 1);

        int w = sign[i];
        if(nw != -1) w = 1;

        int cnt = queryST(1,0,query.size() - 1,nw + 1,query.size() - 1,b[i]);

        w ^= (cnt%2);

        if(w == 0) {
            res += (ll)val[a[i]];
            // cout<<val[a[i]]<<" "<<cnt<<" "<<nw<<endl;
        } else {
            res += (ll)val[b[i]];
            // cout<<val[b[i]]<<" "<<cnt<<" "<<nw<<endl;
        }
    }
    cout<<res<<endl;
    

    return 0;
}

Compilation message

fortune_telling2.cpp: In function 'void buildST(int, int, int)':
fortune_telling2.cpp:32:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for(int i = 0;i < seg[id].size();i++) {
      |                   ~~^~~~~~~~~~~~~~~~
fortune_telling2.cpp: In function 'int main()':
fortune_telling2.cpp:105:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |     for(int i = 0;i < query.size();i++) {
      |                   ~~^~~~~~~~~~~~~~
fortune_telling2.cpp:112:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |     for(int i = 0;i < query.size();i++) {
      |                   ~~^~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 49492 KB Output is correct
2 Correct 28 ms 49612 KB Output is correct
3 Correct 27 ms 49748 KB Output is correct
4 Correct 28 ms 49816 KB Output is correct
5 Correct 26 ms 49748 KB Output is correct
6 Correct 26 ms 49832 KB Output is correct
7 Correct 26 ms 49744 KB Output is correct
8 Correct 27 ms 49820 KB Output is correct
9 Correct 26 ms 49748 KB Output is correct
10 Correct 25 ms 49572 KB Output is correct
11 Correct 27 ms 49620 KB Output is correct
12 Correct 25 ms 49616 KB Output is correct
13 Correct 27 ms 49664 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 49492 KB Output is correct
2 Correct 28 ms 49612 KB Output is correct
3 Correct 27 ms 49748 KB Output is correct
4 Correct 28 ms 49816 KB Output is correct
5 Correct 26 ms 49748 KB Output is correct
6 Correct 26 ms 49832 KB Output is correct
7 Correct 26 ms 49744 KB Output is correct
8 Correct 27 ms 49820 KB Output is correct
9 Correct 26 ms 49748 KB Output is correct
10 Correct 25 ms 49572 KB Output is correct
11 Correct 27 ms 49620 KB Output is correct
12 Correct 25 ms 49616 KB Output is correct
13 Correct 27 ms 49664 KB Output is correct
14 Correct 50 ms 55180 KB Output is correct
15 Correct 80 ms 61224 KB Output is correct
16 Correct 121 ms 67260 KB Output is correct
17 Correct 173 ms 73336 KB Output is correct
18 Correct 187 ms 73284 KB Output is correct
19 Correct 167 ms 73356 KB Output is correct
20 Correct 188 ms 73288 KB Output is correct
21 Correct 188 ms 73360 KB Output is correct
22 Correct 124 ms 67860 KB Output is correct
23 Correct 113 ms 65212 KB Output is correct
24 Correct 101 ms 63060 KB Output is correct
25 Correct 128 ms 69372 KB Output is correct
26 Correct 114 ms 66856 KB Output is correct
27 Correct 135 ms 67832 KB Output is correct
28 Correct 119 ms 67908 KB Output is correct
29 Correct 151 ms 70628 KB Output is correct

Subtask #3
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 49492 KB Output is correct
2 Correct 28 ms 49612 KB Output is correct
3 Correct 27 ms 49748 KB Output is correct
4 Correct 28 ms 49816 KB Output is correct
5 Correct 26 ms 49748 KB Output is correct
6 Correct 26 ms 49832 KB Output is correct
7 Correct 26 ms 49744 KB Output is correct
8 Correct 27 ms 49820 KB Output is correct
9 Correct 26 ms 49748 KB Output is correct
10 Correct 25 ms 49572 KB Output is correct
11 Correct 27 ms 49620 KB Output is correct
12 Correct 25 ms 49616 KB Output is correct
13 Correct 27 ms 49664 KB Output is correct
14 Correct 50 ms 55180 KB Output is correct
15 Correct 80 ms 61224 KB Output is correct
16 Correct 121 ms 67260 KB Output is correct
17 Correct 173 ms 73336 KB Output is correct
18 Correct 187 ms 73284 KB Output is correct
19 Correct 167 ms 73356 KB Output is correct
20 Correct 188 ms 73288 KB Output is correct
21 Correct 188 ms 73360 KB Output is correct
22 Correct 124 ms 67860 KB Output is correct
23 Correct 113 ms 65212 KB Output is correct
24 Correct 101 ms 63060 KB Output is correct
25 Correct 128 ms 69372 KB Output is correct
26 Correct 114 ms 66856 KB Output is correct
27 Correct 135 ms 67832 KB Output is correct
28 Correct 119 ms 67908 KB Output is correct
29 Correct 151 ms 70628 KB Output is correct
30 Correct 499 ms 118772 KB Output is correct
31 Correct 659 ms 130192 KB Output is correct
32 Correct 821 ms 144468 KB Output is correct
33 Runtime error 1008 ms 254428 KB Execution killed with signal 11
34 Halted 0 ms 0 KB -