oj.uz

답안 #487616

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
487616 2021-11-16T09:39:15 Z KazamaHoang Poklon (COCI17_poklon7) C++14
120 / 120
 382 ms 26416 KB 
#include <bits/stdc++.h>

using namespace std;

void maximize(vector<int>& ans, vector<int>& res) {
    for (int i = 0; i < (int)min(ans.size(), res.size()); ++ i) {
        if (ans[i] != res[i]) {
            if (ans[i] < res[i]) {
                swap(ans, res);
                return;
            }
            if (ans[i] > res[i]) return;
        } 
    }
    if (ans.size() < res.size()) swap(ans, res);
}

int n;
pair<int, int> scale[1000005];
vector<int> ans;
int tmp[30];

void update(int u, int d, int cnt = 0) {
    for (int i = 29; i >= 0; -- i) if ((u >> i) & 1) 
        tmp[++cnt] = i+d;
    vector<int> res(tmp+1, tmp+1+cnt);
    maximize(ans, res);
}

inline void calc() {
    stack<pair<int, int>> st;
    st.push({1, 1});
    while (!st.empty()) {
        int u = st.top().first;
        int d = st.top().second;
        st.pop();
        if (scale[u].first > 0) 
            st.push({scale[u].first, d + 1});
        else update(-scale[u].first, d);

        if (scale[u].second > 0)
            st.push({scale[u].second, d + 1});
        else update(-scale[u].second, d);
    }
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n;
    for (int i = 1; i <= n; ++ i) 
        cin >> scale[i].first 
            >> scale[i].second;
    calc();
    ans.push_back(-1);
    for (int j = 0; j + 1 < (int)ans.size(); ++ j) {
        cout << 1;
        for (int h = ans[j] - 1; h > ans[j+1]; -- h) cout << 0;
    }
    return 0;
}

Subtask #1
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 260 KB Output is correct
2 Correct 0 ms 316 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 5 ms 564 KB Output is correct
12 Correct 5 ms 592 KB Output is correct
13 Correct 22 ms 1536 KB Output is correct
14 Correct 38 ms 2796 KB Output is correct
15 Correct 37 ms 2648 KB Output is correct
16 Correct 126 ms 9048 KB Output is correct
17 Correct 298 ms 20936 KB Output is correct
18 Correct 322 ms 21308 KB Output is correct
19 Correct 367 ms 25944 KB Output is correct
20 Correct 382 ms 26416 KB Output is correct