oj.uz

답안 #1067022

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1067022 2024-08-20T09:45:15 Z vux2code Tree Rotations (POI11_rot) C++17
36 / 100
 45 ms 39252 KB 
//Src : Vux2Code
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;  

const ll N = 400005;  
ll sum[N], ls[N], rs[N];
ll root[N], l[N], r[N], val[N];
ll ans, s1, s2;  
ll cnt, n, seg;

void init(ll ro) {
    cin >> val[ro];
    if (!val[ro]) {
        l[ro] = ++cnt;
        init(l[ro]);
        r[ro] = ++cnt;
        init(r[ro]);
    }
}

void pushup(ll rt) {
    sum[rt] = sum[ls[rt]] + sum[rs[rt]];
}

void build(ll l, ll r, ll &rt, ll key) {
    if (!rt) rt = ++seg;
    if (l == r) {
        sum[rt]++;
        return;
    }
    ll mid = (l + r) >> 1;
    if (key <= mid) build(l, mid, ls[rt], key);
    else build(mid + 1, r, rs[rt], key);
    pushup(rt);
}

ll merge(ll r1, ll r2) {
    if (!r1 || !r2) return r1 + r2;
    s1 += (ll)sum[rs[r1]] * sum[ls[r2]];
    s2 += (ll)sum[ls[r1]] * sum[rs[r2]];
    ls[r1] = merge(ls[r1], ls[r2]);
    rs[r1] = merge(rs[r1], rs[r2]);
    pushup(r1);
    return r1;
}

void solve(ll ro) {
    if (!ro) return;
    solve(l[ro]);
    solve(r[ro]);
    if (!val[ro]) {
        s1 = s2 = 0;
        root[ro] = merge(root[l[ro]], root[r[ro]]);
        ans += min(s1, s2);
    }
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n;
    cnt = 1;
    init(1);
    for (ll i = 1; i <= cnt; ++i)
        if (val[i]) build(1, n, root[i], val[i]);
    solve(1);
    cout << ans;
    return 0;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 464 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 464 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1884 KB Output is correct
2 Correct 2 ms 1884 KB Output is correct
3 Correct 2 ms 2140 KB Output is correct
4 Correct 2 ms 2140 KB Output is correct

Subtask #5
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5212 KB Output is correct
2 Correct 10 ms 5492 KB Output is correct
3 Runtime error 18 ms 23384 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 21 ms 25436 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #7
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 28 ms 31312 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 33 ms 31836 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #9
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 42 ms 39252 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #10
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 45 ms 38780 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 43 ms 38924 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -