oj.uz

답안 #971347

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
971347 2024-04-28T11:43:34 Z socpite Palembang Bridges (APIO15_bridge) C++14
78 / 100
 473 ms 28976 KB 
#include<bits/stdc++.h>
using namespace std;
 
long long INF = 1e18;
const int maxn = 1e5+5;
 
vector<int> cp;
 
vector<pair<int, int>> vec;
 
bool cmp(pair<int, int> a, pair<int, int> b){
    return a.first + a.second < b.first + b.second;
}

map<int, long long> mp[2];
long long pfx[maxn], sfx[maxn];

long long crr = -1, a, b;

void init(){
    mp[0].clear();
    mp[1].clear();
    mp[0][-1] = 0;
    crr = -1;
    a = 0;
    b = 0;
}

void upd_crr() {
    while(a < 0){
        crr = mp[0].upper_bound(crr)->first;
        a += mp[0][crr];
        b += mp[1][crr];
    }
    while(a > 0){
        a -= mp[0][crr];
        b -= mp[1][crr];
        crr = prev(mp[0].lower_bound(crr))->first;
    }
}

long long get_ans(){
    long long re = crr*a + b;
    auto it = mp[0].upper_bound(crr);
    if(it != mp[0].end())re = min(re, it->first*(a+it->second) + mp[1][it->first] + b);
    return re;
}

void add_new(int l, int r){
    if(crr < l){
        a--;
        b += l;
    }
    if(crr >= r){
        a++;
        b -= r;
    }
    mp[0][l]++;
    mp[0][r]++;
    mp[1][l]-=l;
    mp[1][r]-=r;
    upd_crr();
}

int k, n;
 
int main(){
    ios::sync_with_stdio(false);
    cin >> k >> n;
    long long ans = INF;
    long long base = 0;
    for(int i = 0; i < n; i++){
        char t1, t2;
        pair<int, int> p;
        cin >> t1 >> p.first >> t2 >> p.second;
        if(p.first > p.second)swap(p.first, p.second);
        base += p.second - p.first;
        if(t1 != t2) {
            base++;
            vec.push_back(p);
            cp.push_back(p.first);
            cp.push_back(p.second);
        }
    }
    if(vec.empty()){
        cout << base;
        return 0;
    }
    sort(vec.begin(), vec.end(), cmp);
    init();
    for(int i = 0; i < vec.size(); i++){
        add_new(vec[i].first, vec[i].second);
        pfx[i] = get_ans();
    }
    init();
    for(int i = vec.size()-1; i >= 0; i--){
        add_new(vec[i].first, vec[i].second);
        sfx[i] = get_ans();
        if(i && k == 2)ans = min(ans, pfx[i-1] + sfx[i]);
        else ans = min(ans, sfx[i]);
    }
    cout << base + ans*2;
    
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:91:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     for(int i = 0; i < vec.size(); i++){
      |                    ~~^~~~~~~~~~~~

Subtask #1
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 1 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 1 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #4
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 2 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 2 ms 604 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 2 ms 604 KB Output is correct

Subtask #5
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 596 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 544 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 2 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 2 ms 604 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 2 ms 604 KB Output is correct
25 Correct 28 ms 3784 KB Output is correct
26 Correct 45 ms 3636 KB Output is correct
27 Correct 445 ms 26396 KB Output is correct
28 Correct 444 ms 28500 KB Output is correct
29 Correct 473 ms 28556 KB Output is correct
30 Correct 162 ms 15216 KB Output is correct
31 Correct 24 ms 3784 KB Output is correct
32 Correct 253 ms 28976 KB Output is correct
33 Correct 202 ms 28600 KB Output is correct
34 Correct 217 ms 27256 KB Output is correct
35 Correct 32 ms 3776 KB Output is correct
36 Correct 270 ms 28624 KB Output is correct
37 Correct 27 ms 3736 KB Output is correct