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Submission #879553

# Submission time Handle Problem Language Result Execution time Memory
879553 2023-11-27T16:13:55 Z Shayan86 Palembang Bridges (APIO15_bridge) C++14
100 / 100
 203 ms 20812 KB 
#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// Ofast, O0, O1, O2, O3, unroll-loops, fast-math, trapv

typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;

#define Mp          make_pair
#define sep         ' '
#define endl        '\n'
#define F	        first
#define S	        second
#define pb          push_back
#define all(x)      (x).begin(),(x).end()
#define kill(res)	cout << res << '\n', exit(0);
#define set_dec(x)	cout << fixed << setprecision(x);
#define fast_io     ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io     freopen("input.txt", "r", stdin) ; freopen("output.txt", "w", stdout);

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll N = 2e5 + 50;
const ll Mod = 1e9 + 7;

ll n, m, k, pre[N], nxt[N], val[N], cnt, med, ans, pref[N], suf[N];

set<pii> ms;
vector<pii> vec;

bool cmp(pii i, pii j){
    return (i.F + i.S) < (j.F + j.S);
}

void add(int x){
    int aft = ms.lower_bound(Mp(x, ++cnt)) -> S;
    ms.insert(Mp(x, cnt));

    val[cnt] = x; pre[cnt] = pre[aft]; nxt[pre[cnt]] = cnt; nxt[cnt] = aft; pre[aft] = cnt;
    ans += abs(val[med] - x);

    if(cnt % 2 == 0 && x < val[med]){
        med = pre[med];
    }
    if(cnt % 2 == 1 && x >= val[med]){
        ans -= val[nxt[med]] - val[med];
        med = nxt[med];
    }
}

int main(){
    fast_io;

    cin >> k >> n;

    ll sum = 0;
    for(int i = 1; i <= n; i++){
        char p, q; int s, t;
        cin >> p >> s >> q >> t;
        if(p != q){
            vec.pb(Mp(s, t)); sum++;
        }
        else sum += abs(s - t);
    }
    if(vec.empty()) kill(sum);

    vec.pb(Mp(-1, -1));
    sort(all(vec), cmp);

    cnt = 2;
    nxt[1] = 2; pre[2] = 1;
    val[1] = -1; val[2] = Mod;
    ms.insert(Mp(val[1], 1));
    ms.insert(Mp(val[2], 2));
    med = 1; ans = 0;

    m = vec.size() - 1; pref[0] = 0;
    for(int i = 1; i <= m; i++){
        add(vec[i].F); add(vec[i].S);
        pref[i] = ans;
    }

    fill(pre, pre + N, 0);
    fill(nxt, nxt + N, 0);
    ms.clear();

    cnt = 2;
    nxt[1] = 2; pre[2] = 1;
    val[1] = -1; val[2] = Mod;
    ms.insert(Mp(val[1], 1));
    ms.insert(Mp(val[2], 2));
    med = 1; ans = 0;

    suf[m+1] = 0;
    for(int i = m; i > 0; i--){
        add(vec[i].F); add(vec[i].S);
        suf[i] = ans;
    }

    ll res = pref[m];
    if(k == 1) kill(res + sum);

    for(int i = 1; i < m; i++) res = min(res, pref[i] + suf[i+1]);
    kill(res + sum);

}

Subtask #1
8.0 / 8.0

# 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 2 ms 8028 KB Output is correct
4 Correct 3 ms 8028 KB Output is correct
5 Correct 3 ms 8160 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 3 ms 8156 KB Output is correct
11 Correct 2 ms 8028 KB Output is correct

Subtask #2
14.0 / 14.0

# 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 2 ms 8028 KB Output is correct
4 Correct 3 ms 8028 KB Output is correct
5 Correct 3 ms 8028 KB Output is correct
6 Correct 2 ms 8184 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 3 ms 8196 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8028 KB Output is correct
11 Correct 2 ms 8028 KB Output is correct
12 Correct 106 ms 19072 KB Output is correct
13 Correct 191 ms 20616 KB Output is correct
14 Correct 192 ms 18476 KB Output is correct
15 Correct 104 ms 15476 KB Output is correct
16 Correct 103 ms 19956 KB Output is correct
17 Correct 109 ms 20656 KB Output is correct
18 Correct 102 ms 20236 KB Output is correct
19 Correct 97 ms 20688 KB Output is correct
20 Correct 113 ms 20172 KB Output is correct
21 Correct 108 ms 20424 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2 ms 8028 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 2 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 7892 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8028 KB Output is correct
11 Correct 2 ms 8028 KB Output is correct
12 Correct 2 ms 7892 KB Output is correct

Subtask #4
32.0 / 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 2 ms 8028 KB Output is correct
4 Correct 2 ms 8024 KB Output is correct
5 Correct 2 ms 8028 KB Output is correct
6 Correct 1 ms 8024 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 1 ms 8028 KB Output is correct
10 Correct 2 ms 8028 KB Output is correct
11 Correct 2 ms 7904 KB Output is correct
12 Correct 2 ms 7884 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 2 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 2 ms 8028 KB Output is correct
17 Correct 2 ms 8028 KB Output is correct
18 Correct 2 ms 8028 KB Output is correct
19 Correct 2 ms 8028 KB Output is correct
20 Correct 3 ms 8028 KB Output is correct
21 Correct 2 ms 8028 KB Output is correct
22 Correct 2 ms 8024 KB Output is correct
23 Correct 2 ms 8028 KB Output is correct
24 Correct 2 ms 8028 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 2 ms 8028 KB Output is correct
4 Correct 2 ms 8024 KB Output is correct
5 Correct 2 ms 8072 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 1 ms 8028 KB Output is correct
9 Correct 2 ms 7892 KB Output is correct
10 Correct 1 ms 8024 KB Output is correct
11 Correct 2 ms 8028 KB Output is correct
12 Correct 2 ms 8024 KB Output is correct
13 Correct 3 ms 8028 KB Output is correct
14 Correct 3 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 2 ms 8028 KB Output is correct
17 Correct 2 ms 8028 KB Output is correct
18 Correct 2 ms 8028 KB Output is correct
19 Correct 3 ms 8080 KB Output is correct
20 Correct 2 ms 8280 KB Output is correct
21 Correct 2 ms 8028 KB Output is correct
22 Correct 2 ms 8024 KB Output is correct
23 Correct 3 ms 8028 KB Output is correct
24 Correct 2 ms 8028 KB Output is correct
25 Correct 106 ms 19068 KB Output is correct
26 Correct 158 ms 19400 KB Output is correct
27 Correct 199 ms 20020 KB Output is correct
28 Correct 194 ms 20568 KB Output is correct
29 Correct 203 ms 20812 KB Output is correct
30 Correct 86 ms 14804 KB Output is correct
31 Correct 106 ms 19956 KB Output is correct
32 Correct 104 ms 20756 KB Output is correct
33 Correct 98 ms 20172 KB Output is correct
34 Correct 79 ms 20684 KB Output is correct
35 Correct 109 ms 20164 KB Output is correct
36 Correct 100 ms 20424 KB Output is correct
37 Correct 110 ms 19152 KB Output is correct