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답안 #1117173

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1117173 2024-11-22T21:27:38 Z PagodePaiva 이상한 기계 (APIO19_strange_device) C++17
0 / 100
 72 ms 94284 KB 
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
#include<bits/stdc++.h>
#define int long long

using namespace std;

const int N = 4000010;
long long res = 0;
int n;
long long A, B;
vector <pair <int, int>> opp[N];

long long gdc(long long x, long long y){
    if(x < y) swap(x, y);
    return (y == 0 ? x : gdc(y, x%y));
}

void corrigir(vector <pair <int, int>> &v){
    vector <pair <int, int>> aux;
    for(auto [l, r] : v){
        if(r-l+1 >= A) {
            aux.push_back({0, A-1});
            continue;
        }
        l %= A;
        r %= A;
        if(l <= r) aux.push_back({l, r});
        else{
            aux.push_back({l, A-1});
            aux.push_back({0,r});
        }
    }
    v = aux;
    sort(v.begin(), v.end());
    aux.clear();
    for(auto [l, r] : v){
        //cout << l << ' ' << r << '\n';
        if(!aux.empty()){
            auto [a, b] = aux.back();
            if(b < l) aux.push_back({l, r});
            else{
                aux.pop_back();
                aux.push_back({a, max(b, r)});
            }
        }
        else{
            aux.push_back({l, r});
        }
    }
    v = aux;
    return;
}

int32_t main(){
    ios::sync_with_stdio(false); cin.tie(0);
    cin >> n >> A >> B;
    A = A/gdc(A, B+1);
    vector <pair <int, int>> queries;
    vector <array <int, 3>> corners;
    for(int i = 1;i <= n;i++){
        int l, r;
        cin >> l >> r;
        if(r-l+1 <= B and r%B >= l%B){
            int d = r/B;
            corners.push_back({l%B, r%B, (d%A)});
            continue;
        }
        if(l%B != 0){
            int d = (l+B-1)/B;
            corners.push_back({l%B, B-1, ((d-1)%A+A)%A});
        }
        int a = (l+B-1)/B;
        int b = r/B;
        if(r%B == B-1){
            queries.push_back({a, b});
            continue;
        }
        if(B*a <= B*b-1){
            queries.push_back({a, b-1});
        }
        if(r%B != B-1){
            corners.push_back({0, r%B, b%A});
        }
    }
    corrigir(queries);
    //set <int> s;
    map <int, int> m;
    map <int ,int> cnt;
    int add = 0;
    //cout << "cte:\n";
    for(auto [l, r] : queries){
        //cout << l << ' ' << r << '\n';
        m[l] = r;
        add += r-l+1;
        //s.insert(l);
    }
    //cout << '\n';
    set <int> valores;
    for(auto [l, r, w] : corners){
        //cout << l << ' ' << r << ' ' << w << '\n';
        valores.insert(l);
        valores.insert(r+1);
    }
    map <int, int> mapear;
    int con = 0;
    for(auto x : valores){
        mapear[x] = con;
        con++;
    }
    mapear[B] = con;
    con++;
    for(auto [l, r, w] : corners){
        opp[mapear[l]].push_back({w, 0});
        opp[mapear[r+1]].push_back({w, 1});
    }
    int st = 0;
    vector <int> v;
    for(auto [aa, bb] : m){
        v.push_back(aa);
    }
    for(auto [pos, valor] : mapear){
        res += (pos-st)*add;
        st = pos;
        for(auto [x, tp] : opp[valor]){
            if(tp == 0){
                int d = upper_bound(v.begin(), v.end(), x)-v.begin();
                if(d == 0) continue;
                d--;
                if(m[v[d]] >= x) continue;
                if(cnt[x] == 0) add++;
                cnt[x]++;
            }
            else{
                auto it = cnt.find(x);
                if(it == cnt.end()) continue;
                auto [_, d] = *it;
                if(d == 1){
                    cnt.erase(it);
                    add--;
                    continue;
                }
                cnt[x]--;
            }   
        }
        //cout << add << '\n';
    }
    cout << res << '\n';
    return 0;
}

/*
10 7 1
3 5
8 11
26 33
40 52
65 69
83 95
113 123
135 136
154 166
182 185
*/

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 53 ms 94280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 64 ms 94284 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 58 ms 94248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 72 ms 94280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 72 ms 94280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 72 ms 94280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 69 ms 94280 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 53 ms 94280 KB Output isn't correct
2 Halted 0 ms 0 KB -