oj.uz

Submission #1077282

# Submission time Handle Problem Language Result Execution time Memory
1077282 2024-08-27T04:36:25 Z Muhammet Palembang Bridges (APIO15_bridge) C++17
22 / 100
 36 ms 6616 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define sz(x) (int)x.size()
#define ff first
#define ss second
 
const int N = 300005;
const int M = 1e9 + 7;
 
int T, n, k, s1[N], s2[N];
 
char c1[N], c2[N];
 
signed main(){
	ios::sync_with_stdio(false); cin.tie(0);
 
	cin >> k >> n;
	for(int i = 1; i <= n; i++){
		cin >> c1[i] >> s1[i] >> c2[i] >> s2[i];
	}
 

    int ans = 0;
	if(k == 1){
		vector <int> v;
		for(int i = 1; i <= n; i++){
			if(c1[i] == c2[i]){
				ans += abs(s1[i]-s2[i]);
			}
			else {
				v.push_back(s1[i]);
				v.push_back(s2[i]);
			}
		}
		sort(v.begin(), v.end());
		int x = (sz(v)+1)/2;
		x--;
		if(x >= 0) x = v[x];
		for(auto i : v){
			ans += abs(i-x);
		}
		cout << ans+sz(v)/2 << "\n";
        return 0;
	}

	vector <pair<int,pair<int,int>>> v1;

	for(int i = 1; i <= n; i++){
		if(c1[i] != c2[i]){
			v1.push_back({(s1[i]+s2[i])/2,{min(s1[i],s2[i]),max(s1[i],s2[i])}});
		}
        else {
            ans += abs(s1[i]-s2[i]);
        }
	}
    
    ans += sz(v1);
    if(sz(v1) > 0){
        sort(v1.begin(), v1.end());
    }

	multiset <int> st1, st2;
	vector <int> p(sz(v1),0), f(sz(v1),0);
	for(int j = 0; j < sz(v1); j++){
		pair <int,pair<int,int>> i = v1[j];
		st1.insert(i.ss.ff);
		st1.insert(i.ss.ss);
		st2.insert(*st1.rbegin());
		st1.erase(--st1.end());
		st2.insert(*st1.rbegin());
		st1.erase(--st1.end());
		st1.insert(*st2.begin());
		st2.erase(st2.begin());
		int med = (*st1.rbegin());
		for(int j1 = 0; j1 <= j; j1++){
			p[j] += abs(med-v1[j1].ss.ff);
			p[j] += abs(med-v1[j1].ss.ss);
		}
	}
	for(int j = sz(v1)-1; j >= 0; j--){
		pair <int,pair<int,int>> i = v1[j];
		st1.insert(i.ss.ff);
		st1.insert(i.ss.ss);
		st2.insert(*st1.rbegin());
		st1.erase(--st1.end());
		st2.insert(*st1.rbegin());
		st1.erase(--st1.end());
		st1.insert(*st2.begin());
		st2.erase(st2.begin());
		int med = (*st1.rbegin());
		for(int j1 = sz(v1)-1; j1 >= j; j1--){
			f[j] += abs(med-v1[j1].ss.ff);
			f[j] += abs(med-v1[j1].ss.ss);
		}
	}

	int mn = 0;
    if(sz(v1) > 0) mn = min(p[sz(v1)-1],f[0]);
	for(int i = 0; i < sz(v1)-1; i++){
		mn = min(mn,p[i]+f[i+1]);
	}
    cout << ans + mn << "\n";
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 472 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 16 ms 5076 KB Output is correct
13 Correct 35 ms 6604 KB Output is correct
14 Correct 24 ms 5332 KB Output is correct
15 Correct 19 ms 4060 KB Output is correct
16 Correct 19 ms 6104 KB Output is correct
17 Correct 21 ms 6612 KB Output is correct
18 Correct 27 ms 6356 KB Output is correct
19 Correct 36 ms 6616 KB Output is correct
20 Correct 20 ms 6104 KB Output is correct
21 Correct 26 ms 6360 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 0 ms 500 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 464 KB Output is correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -