oj.uz

답안 #1114747

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1114747 2024-11-19T14:17:12 Z ShaShi Palembang Bridges (APIO15_bridge) C++17
31 / 100
 132 ms 113708 KB 
#include <bits/stdc++.h>
 
#define int long long 
 
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
 
#define F first 
#define S second
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
#define kill(x) cout << x << "\n", exit(0);
#define pii pair<int, int>
#define pll pair<long long, long long>
#define endl "\n"
 
 
 
using namespace std;
typedef long long ll;
// typedef __int128_t lll;
typedef long double ld;
 
 
const int MAXN = (int)1e6 + 7;
const int MOD = 998244353;
const ll INF = (ll)1e18 + 7;
 
 
int n, m, k, tmp, t, tmp2, tmp3, tmp4, u, v, w, flag, q, ans, N, res, pre_ans;
pii arr[MAXN], di[MAXN];
char ch, ch2;
vector<int> vec[2][MAXN], cmp;
int ps[2][MAXN];
vector<int> cnt[2][MAXN];
 
 
 
inline int id(int n) { return lower_bound(all(cmp), n)-cmp.begin(); }
 
 
vector<pii> _vec;
map<int, int> _cnt;
 
inline int solve1() {
    for (int i=1; i<=n; i++) {
        u = arr[i].F; v = arr[i].S;
 
        _cnt[u]++, _cnt[v]++, _vec.pb({u, v}), tmp2 += 2;
    }
 
    int res2 = 0;
 
    for (auto cur: _cnt) {
        tmp += cur.S;
 
        // cout << cur.F << " " << cur.S << endl;
 
        if (tmp+tmp >= tmp2) {
            tmp = cur.F;
            break;
        }
    }
 
    for (auto cur:_cnt) res2 += abs(cur.F-tmp)*cur.S;
 
    tmp = tmp2 = 0;
 
    return res2+_vec.size();
}
 
 
/* Segment Tree */
#define mid ((l+r)>>1)
#define lid (id<<1)
#define rid (lid|1)
 
 
struct D {
    int sigmaL, sigmaR, cnt;
 
    D () {}
} seg[MAXN<<2], emp;
 
 
inline D merge(D x, D y) {
    D res;
 
    res.sigmaL = x.sigmaL+y.sigmaL;
    res.sigmaR = x.sigmaR+y.sigmaR;
    res.cnt = x.cnt+y.cnt;
 
    return res;
}
 
 
void add(int s, int ind, int l=0, int r=N, int id=1) {
    // if (id == 1) cout << "+ " << arr[ind].F << " " << arr[ind].S << " " << s << endl;
 
    if (l+1 == r) {
        seg[id].cnt++;
        seg[id].sigmaL += arr[ind].F;
        seg[id].sigmaR += arr[ind].S;
 
        return;
    }
 
    if (s < mid) add(s, ind, l, mid, lid);
    else add(s, ind, mid, r, rid);
 
    seg[id] = merge(seg[lid], seg[rid]);
}
 
 
void rem(int s, int ind, int l=0, int r=N, int id=1) {
    // if (id == 1) cout << "- " << arr[ind].F << " " << arr[ind].S << endl;
 
    if (l+1 == r) {
        seg[id].cnt--;
        seg[id].sigmaL -= arr[ind].F;
        seg[id].sigmaR -= arr[ind].S;
 
        return;
    }
 
    if (s < mid) rem(s, ind, l, mid, lid);
    else rem(s, ind, mid, r, rid);
 
    seg[id] = merge(seg[lid], seg[rid]);
}
 
 
D get(int s, int t, int l=0, int r=N, int id=1) {
    if (s >= t) return emp;
    if (s <= l && t >= r) return seg[id];
    if (t <= mid) return get(s, t, l, mid, lid);
    if (s >= mid) return get(s, t, mid, r, rid);
    return merge(get(s, t, l, mid, lid), get(s, t, mid, r, rid));
}
 
/* Segment Tree */
 
 
inline int cost(int x, int y) {
    int res = ps[0][x] + ps[1][y];
 
    D cur;
    cur = get(0, id(cmp[x]+cmp[y])); res += cur.sigmaL - cmp[x]*cur.cnt;
    cur = get(id(cmp[x]+cmp[y]), N); res += cmp[y]*cur.cnt - cur.sigmaR;
 
    return res;
}
 
 
inline int delta(int x, int y) {
    int res = cost(x, y+1)-cost(x, y);
 
    res += cnt[1][y].size()-(upper_bound(all(cnt[1][y]), x)-cnt[1][y].begin());
 
 
    return res;
}
 

inline int delta2(int x, int y) {
    int res = cost(x, y-1)-cost(x, y);
 
    res -= cnt[1][y-1].size()-(upper_bound(all(cnt[1][y-1]), x)-cnt[1][y-1].begin());
 
 
    return res;
}
 
 
int32_t main() {
    #ifdef LOCAL
    freopen("inp.in", "r", stdin);
    freopen("res.out", "w", stdout);
    #else
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #endif
 
    cin >> k >> n;
 
    N = 0;
 
    for (int i=1; i<=n; i++) {
        cin >> ch >> u >> ch2 >> v;
 
        if (ch == ch2) res += abs(u-v);
        else arr[++N] = {u, v};
    }
 
    n = N; pre_ans = res; res += solve1();
 
    if (k == 1) kill(res);
 
    for (int i=1; i<=n; i++) {
        u = arr[i].F; v = arr[i].S;
        if (u > v) swap(arr[i].F, arr[i].S);
        pre_ans += abs(arr[i].F-arr[i].S)+1;
        cmp.pb(u); cmp.pb(v); cmp.pb(u+v);
    }
 
    sort(all(cmp));
    cmp.resize(unique(all(cmp))-cmp.begin());
    N = cmp.size(); emp.sigmaL = emp.sigmaR = emp.cnt = 0;
 
    // cout << "@ " << endl;
    // for (int u:cmp) cout << u << " ";
    // cout << endl;
 
 
    for (int i=1; i<=n; i++) {
        u = di[i].F = id(arr[i].F);
        v = di[i].S = id(arr[i].S);
 
        // cnt[0][u]++; cnt[1][v]++;
        cnt[0][u].pb(v); cnt[1][v].pb(u);
        vec[0][u].pb(i); vec[1][v].pb(i);
    }
 
    for (int i=0; i<N; i++) {
        sort(all(cnt[0][i]));
        sort(all(cnt[1][i]));
    }
 
    
    tmp = tmp2 = 0;
    
    for (int i=0; i<N; i++) {
        ps[0][i] = cmp[i]*tmp2-tmp;
 
        for (int ind:vec[1][i]) {
            tmp2++;
            tmp += arr[ind].S;
        }
    }
 
 
    tmp = tmp2 = 0;
    
    for (int i=N-1; i>=0; i--) {
        ps[1][i] = tmp-cmp[i]*tmp2;
 
        for (int ind:vec[0][i]) {
            tmp2++;
            tmp += arr[ind].F;
        }
    }
 
    // for (int i=1; i<=n; i++) add(id(arr[i].F+arr[i].S), i);
 
    ans = INF;
    int j = 1;
 
    for (int i=0; i<N; i++) {
        for (auto ind:vec[0][i]) {
            if (di[ind].S >= j) continue;
 
            rem(id(arr[ind].F+arr[ind].S), ind);
        }
 
        

        while (j-1 > i ){//&& delta2(i, j) <= 0) {
            j--;

            for (auto ind:vec[1][j]) {
                if (di[ind].F <= i) continue;
 
                rem(id(arr[ind].F+arr[ind].S), ind);
            }

            ans = min(ans, pre_ans+2*cost(i, j));
        }


        while (j+1 < N && (j <= i || delta(i, j) <= 0)) {
            for (auto ind:vec[1][j]) {
                if (di[ind].F <= i) continue;
 
                add(id(arr[ind].F+arr[ind].S), ind);
            }
 
            j++;

            ans = min(ans, pre_ans+2*cost(i, j));
        }
 
        // cout << "! " << i << " " << j << " " << pre_ans+2*cost(i, j) << endl;
 
        ans = min(ans, pre_ans+2*cost(i, j));
    }
 
 
    // cout << ans << " " << res << endl;
    cout << min(ans, res) << endl;
 
    
    return 0;
}

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 97872 KB Output is correct
2 Correct 26 ms 98108 KB Output is correct
3 Correct 29 ms 98120 KB Output is correct
4 Correct 27 ms 98128 KB Output is correct
5 Correct 32 ms 98120 KB Output is correct
6 Correct 30 ms 98128 KB Output is correct
7 Correct 28 ms 98052 KB Output is correct
8 Correct 29 ms 98128 KB Output is correct
9 Correct 28 ms 98128 KB Output is correct
10 Correct 28 ms 98128 KB Output is correct
11 Correct 31 ms 98124 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 97868 KB Output is correct
2 Correct 34 ms 98128 KB Output is correct
3 Correct 29 ms 98056 KB Output is correct
4 Correct 26 ms 98064 KB Output is correct
5 Correct 30 ms 98128 KB Output is correct
6 Correct 31 ms 98128 KB Output is correct
7 Correct 32 ms 98128 KB Output is correct
8 Correct 34 ms 98120 KB Output is correct
9 Correct 36 ms 98100 KB Output is correct
10 Correct 28 ms 98128 KB Output is correct
11 Correct 28 ms 98120 KB Output is correct
12 Correct 42 ms 101840 KB Output is correct
13 Correct 132 ms 113652 KB Output is correct
14 Correct 67 ms 102076 KB Output is correct
15 Correct 85 ms 107196 KB Output is correct
16 Correct 48 ms 101836 KB Output is correct
17 Correct 95 ms 113708 KB Output is correct
18 Correct 88 ms 113600 KB Output is correct
19 Correct 103 ms 113080 KB Output is correct
20 Correct 49 ms 101828 KB Output is correct
21 Correct 98 ms 113596 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 97884 KB Output is correct
2 Correct 37 ms 98120 KB Output is correct
3 Correct 28 ms 98140 KB Output is correct
4 Correct 39 ms 98128 KB Output is correct
5 Correct 36 ms 97996 KB Output is correct
6 Correct 27 ms 98124 KB Output is correct
7 Correct 28 ms 98120 KB Output is correct
8 Correct 36 ms 98128 KB Output is correct
9 Correct 32 ms 98124 KB Output is correct
10 Correct 34 ms 98064 KB Output is correct
11 Correct 28 ms 98016 KB Output is correct
12 Correct 36 ms 98128 KB Output is correct

Subtask #4
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 97872 KB Output is correct
2 Correct 36 ms 97872 KB Output is correct
3 Correct 36 ms 98300 KB Output is correct
4 Correct 43 ms 103036 KB Output is correct
5 Correct 41 ms 98128 KB Output is correct
6 Correct 37 ms 98128 KB Output is correct
7 Correct 43 ms 98120 KB Output is correct
8 Correct 46 ms 98128 KB Output is correct
9 Correct 48 ms 98128 KB Output is correct
10 Correct 40 ms 98128 KB Output is correct
11 Correct 34 ms 98128 KB Output is correct
12 Correct 39 ms 98132 KB Output is correct
13 Correct 32 ms 98120 KB Output is correct
14 Incorrect 32 ms 98088 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 97872 KB Output is correct
2 Correct 30 ms 98076 KB Output is correct
3 Correct 26 ms 98888 KB Output is correct
4 Correct 36 ms 98120 KB Output is correct
5 Correct 33 ms 98132 KB Output is correct
6 Correct 30 ms 98128 KB Output is correct
7 Correct 28 ms 98128 KB Output is correct
8 Correct 40 ms 98132 KB Output is correct
9 Correct 36 ms 98128 KB Output is correct
10 Correct 38 ms 98084 KB Output is correct
11 Correct 31 ms 98128 KB Output is correct
12 Correct 37 ms 98128 KB Output is correct
13 Correct 32 ms 98120 KB Output is correct
14 Incorrect 35 ms 98128 KB Output isn't correct
15 Halted 0 ms 0 KB -