oj.uz

답안 #1114382

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1114382 2024-11-18T18:00:52 Z ShaShi Palembang Bridges (APIO15_bridge) C++17
31 / 100
 159 ms 110268 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;
}
 
 
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 < 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++;
        }
 
        // 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 53 ms 94732 KB Output is correct
2 Correct 55 ms 94964 KB Output is correct
3 Correct 54 ms 94792 KB Output is correct
4 Correct 58 ms 94832 KB Output is correct
5 Correct 59 ms 94796 KB Output is correct
6 Correct 57 ms 94796 KB Output is correct
7 Correct 58 ms 94924 KB Output is correct
8 Correct 57 ms 94884 KB Output is correct
9 Correct 58 ms 94788 KB Output is correct
10 Correct 56 ms 94816 KB Output is correct
11 Correct 59 ms 94792 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 64 ms 94792 KB Output is correct
2 Correct 67 ms 94792 KB Output is correct
3 Correct 64 ms 94792 KB Output is correct
4 Correct 66 ms 94784 KB Output is correct
5 Correct 65 ms 94800 KB Output is correct
6 Correct 67 ms 94792 KB Output is correct
7 Correct 63 ms 94792 KB Output is correct
8 Correct 63 ms 94796 KB Output is correct
9 Correct 61 ms 94792 KB Output is correct
10 Correct 64 ms 94796 KB Output is correct
11 Correct 62 ms 94792 KB Output is correct
12 Correct 79 ms 98504 KB Output is correct
13 Correct 159 ms 110264 KB Output is correct
14 Correct 92 ms 98848 KB Output is correct
15 Correct 113 ms 103868 KB Output is correct
16 Correct 79 ms 98556 KB Output is correct
17 Correct 114 ms 110268 KB Output is correct
18 Correct 125 ms 110264 KB Output is correct
19 Correct 133 ms 109756 KB Output is correct
20 Correct 72 ms 98500 KB Output is correct
21 Correct 124 ms 110264 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 94792 KB Output is correct
2 Correct 61 ms 94792 KB Output is correct
3 Correct 64 ms 94788 KB Output is correct
4 Correct 71 ms 94764 KB Output is correct
5 Correct 62 ms 94848 KB Output is correct
6 Correct 60 ms 94792 KB Output is correct
7 Correct 65 ms 94796 KB Output is correct
8 Correct 67 ms 94744 KB Output is correct
9 Correct 67 ms 94876 KB Output is correct
10 Correct 66 ms 94828 KB Output is correct
11 Correct 62 ms 94792 KB Output is correct
12 Correct 66 ms 94876 KB Output is correct

Subtask #4
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 62 ms 94796 KB Output is correct
2 Correct 62 ms 94704 KB Output is correct
3 Correct 65 ms 94792 KB Output is correct
4 Correct 63 ms 94792 KB Output is correct
5 Correct 68 ms 94792 KB Output is correct
6 Correct 63 ms 94792 KB Output is correct
7 Correct 60 ms 94712 KB Output is correct
8 Correct 64 ms 94736 KB Output is correct
9 Correct 61 ms 94792 KB Output is correct
10 Correct 63 ms 94792 KB Output is correct
11 Correct 63 ms 94784 KB Output is correct
12 Correct 75 ms 94792 KB Output is correct
13 Correct 61 ms 94948 KB Output is correct
14 Incorrect 63 ms 94832 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 94724 KB Output is correct
2 Correct 70 ms 94792 KB Output is correct
3 Correct 63 ms 94792 KB Output is correct
4 Correct 67 ms 94792 KB Output is correct
5 Correct 61 ms 94656 KB Output is correct
6 Correct 60 ms 94792 KB Output is correct
7 Correct 61 ms 94656 KB Output is correct
8 Correct 62 ms 94800 KB Output is correct
9 Correct 68 ms 94704 KB Output is correct
10 Correct 63 ms 94792 KB Output is correct
11 Correct 67 ms 94792 KB Output is correct
12 Correct 66 ms 94792 KB Output is correct
13 Correct 62 ms 94792 KB Output is correct
14 Incorrect 62 ms 94792 KB Output isn't correct
15 Halted 0 ms 0 KB -