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Submission #89878

# Submission time Handle Problem Language Result Execution time Memory
89878 2018-12-18T17:50:57 Z popovicirobert Weighting stones (IZhO11_stones) C++14
100 / 100
 85 ms 16932 KB 
#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
#define ld long double
// 217
// 44

using namespace std;

const int MAXN = (int) 1e5;

struct Aint {
    int mn, mx;
    int lazy;
}aint[4 * MAXN + 1];

inline void solve_lazy(int nod) {
    if(2 * nod + 1 <= 4 * MAXN) {
       aint[2 * nod].lazy += aint[nod].lazy;
       aint[2 * nod + 1].lazy += aint[nod].lazy;
    }
    aint[nod].mn += aint[nod].lazy;
    aint[nod].mx += aint[nod].lazy;
    aint[nod].lazy = 0;
}

inline void refresh(int nod) {
    if(2 * nod + 1 > 4 * MAXN) {
        return ;
    }
    solve_lazy(2 * nod);
    solve_lazy(2 * nod + 1);
    aint[nod].mn = min(aint[2 * nod].mn, aint[2 * nod + 1].mn);
    aint[nod].mx = max(aint[2 * nod].mx, aint[2 * nod + 1].mx);
}

void update(int nod, int left, int right, int l, int r, int val) {
    solve_lazy(nod);
    if(l <= left && right <= r) {
        aint[nod].lazy += val;
        solve_lazy(nod);
    }
    else {
        int mid = (left + right) / 2;
        if(l <= mid)
            update(2 * nod, left, mid, l, r, val);
        if(mid < r)
            update(2 * nod + 1, mid + 1, right, l, r, val);
    }
    refresh(nod);
}

int main() {
    //ifstream cin("A.in");
    //ofstream cout("A.out");
    int i, n;
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cin >> n;
    for(i = 1; i <= n; i++) {
        int r, s;
        cin >> r >> s;
        if(s == 1) {
            update(1, 1, n, 1, r, 1);
        }
        else {
            update(1, 1, n, 1, r, -1);
        }
        if(aint[1].mn >= 0) {
            cout << '>';
        }
        else if(aint[1].mx <= 0) {
            cout << '<';
        }
        else {
            cout << '?';
        }
        cout << "\n";
    }
    //cin.close();
    //cout.close();
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 456 KB Output is correct
3 Correct 2 ms 456 KB Output is correct
4 Correct 2 ms 456 KB Output is correct
5 Correct 3 ms 468 KB Output is correct
6 Correct 2 ms 648 KB Output is correct
7 Correct 3 ms 648 KB Output is correct
8 Correct 3 ms 756 KB Output is correct
9 Correct 4 ms 924 KB Output is correct
10 Correct 11 ms 2272 KB Output is correct
11 Correct 53 ms 6148 KB Output is correct
12 Correct 85 ms 6744 KB Output is correct
13 Correct 74 ms 7616 KB Output is correct
14 Correct 80 ms 8356 KB Output is correct
15 Correct 74 ms 9244 KB Output is correct
16 Correct 77 ms 10060 KB Output is correct
17 Correct 72 ms 10688 KB Output is correct
18 Correct 74 ms 11460 KB Output is correct
19 Correct 74 ms 12316 KB Output is correct
20 Correct 73 ms 12960 KB Output is correct
21 Correct 74 ms 13812 KB Output is correct
22 Correct 74 ms 14676 KB Output is correct
23 Correct 73 ms 15364 KB Output is correct
24 Correct 74 ms 16076 KB Output is correct
25 Correct 74 ms 16932 KB Output is correct