Submission #991334

#	Time	Username	Problem	Language	Result	Execution time	Memory
991334		gmroh06	즐거운 사진 수집 (JOI13_collecting)	C++14	30 / 100	730 ms	76372 KiB

collecting

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

inline void fastio() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);
    std::cout.tie(nullptr);
}

ll n, q, MAX;
ll row_tree[1 << 21], col_tree[1 << 21];
ll row[21], col[21];

void update(ll* tree, ll* cnt, ll loc) {
    loc |= MAX;
    tree[loc] ^= 1;
    ll d = n;

    while (loc > 1) {
        loc >>= 1, d--;

        if (tree[loc] % (1LL << n - d) == 0) cnt[d]--;

        tree[loc] = tree[loc << 1] + tree[loc << 1 | 1];

        if (tree[loc] % (1LL << n - d) == 0) cnt[d]++;
    }
}

int main() {
    fastio();

    cin >> n >> q;

    MAX = 1 << n;

    for (ll i = 0; i <= 20; i++) {
        row[i] = col[i] = 1LL << i;
    }

    while (q--) {
        ll t, x, ans = 1 << 2 * n;

        cin >> t >> x;

        t ? update(col_tree, col, x - 1) : update(row_tree, row, x - 1);

        for (ll i = 0; i < n; i++) {
            ans += 1LL << 2 * i;
            ans -= row[i] * col[i] * 4;
        }

        cout << ans << '\n';
    }

    return 0;
}

Compilation message (stderr)

collecting.cpp: In function 'void update(ll*, ll*, ll)':
collecting.cpp:24:35: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   24 |         if (tree[loc] % (1LL << n - d) == 0) cnt[d]--;
      |                                 ~~^~~
collecting.cpp:28:35: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   28 |         if (tree[loc] % (1LL << n - d) == 0) cnt[d]++;
      |                                 ~~^~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 70