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Submission #287832

# Submission time Handle Problem Language Result Execution time Memory
287832 2020-09-01T03:50:49 Z zecookiez Tree Rotations (POI11_rot) C++17
36 / 100
 1000 ms 14072 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
using namespace std;
using namespace __gnu_pbds;
template<class C>constexpr int len(const C&c){return int(c.size());}
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;

const int MAXN = 200005;
int N; long long ans, bit[MAXN], wtf[MAXN];

void update(int pos, int val){
    if(wtf[pos] == 1) assert(val == -1);
    else assert(val == 1);
    wtf[pos] += val;
    for(int i = pos; i <= N; i += i & -i) bit[i] += val;
}
long long query(int pos){
    long long tot = 0;
    for(int i = pos; i > 0; i -= i & -i) tot += bit[i];
    return tot;
}
vector<int> solve(){
    int A; cin >> A;
    if(A != 0){
        update(A, 1);
        return {A};
    }
    vector<int> left = solve(), right = solve();
    if(len(left) > len(right)) swap(left, right);
    sort(right.begin(), right.end());
    long long cur, case1 = 0, case2 = 0;
    for(auto i : left) update(i, -1);
    for(auto i : left){
        cur = lower_bound(right.begin(), right.end(), i) - right.begin();
        case1 += cur;
        case2 += len(right) - cur;
        //assert(cur == (lower_bound(right.begin(), right.end(), i) - right.begin()));
    }
    ans += min(case1, case2);
    for(auto i : left) update(i, 1), right.push_back(i);
    return right;
}

int main(){
    cin.sync_with_stdio(0); cin.tie(0); cout.tie(0);
    memset(bit, 0, sizeof(bit));
    cin >> N; solve(); cout << ans << '\n';
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1920 KB Output is correct
2 Correct 1 ms 1920 KB Output is correct
3 Correct 1 ms 1920 KB Output is correct
4 Correct 2 ms 1920 KB Output is correct
5 Correct 2 ms 1960 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1920 KB Output is correct
2 Correct 2 ms 1920 KB Output is correct
3 Correct 2 ms 1920 KB Output is correct
4 Correct 2 ms 1952 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1920 KB Output is correct
2 Correct 3 ms 1920 KB Output is correct
3 Correct 2 ms 1920 KB Output is correct
4 Correct 6 ms 2048 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 176 ms 2456 KB Output is correct
2 Correct 7 ms 2048 KB Output is correct
3 Correct 305 ms 2552 KB Output is correct
4 Correct 97 ms 2544 KB Output is correct

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1083 ms 3916 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 3244 KB Output is correct
2 Execution timed out 1092 ms 5500 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #7
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1083 ms 14072 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1046 ms 3664 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1089 ms 9772 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1089 ms 6008 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1091 ms 5548 KB Time limit exceeded
2 Halted 0 ms 0 KB -