Submission #378570

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
378570	2021-03-17 01:50:40	2qbingxuan	Chessboard (IZhO18_chessboard)	C++14	47 / 100	340 ms	2028 KiB

chessboard

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#include <bits/stdc++.h>
#ifdef local
#define safe std::cerr<<__PRETTY_FUNCTION__<<" line "<<__LINE__<<" safe\n"
#define debug(a...) qqbx(#a, a)
template <typename ...T> void qqbx(const char *s, T ...a) {
    int cnt = sizeof...(T);
    ((std::cerr << "\033[1;32m(" << s << ") = (") , ... , (std::cerr << a << (--cnt ? ", " : ")\033[0m\n")));
}
#else
#define safe ((void)0)
#define debug(...) ((void)0)
#endif // local
using namespace std;
using ll = int64_t;
const int maxn = 100025;
const ll INF = 1e18;
bool isBlack(int x, int y) {
    return (x + y) & 1;
}
ll calc2d(int x, int y, int k, bool c) {
    if (x < 0 || y < 0) return 0;
    ++x, ++y;
    ll qx = x / k, rx = x % k;
    ll qy = y / k, ry = y % k;
    ll ans = 0;
    ans += ry * k * (isBlack(0, qy) == c ? (qx + 1) / 2 : qx / 2);
    ans += rx * k * (isBlack(qx, 0) == c ? (qy + 1) / 2 : qy / 2);
    ans += k * k * (isBlack(0, 0) == c ? (qx * qy + 1) / 2 : qx * qy / 2);
 
 
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Compilation message (stderr)

chessboard.cpp: In function 'll calc(int, std::vector<std::tuple<int, int, int, int> >&, int)':
chessboard.cpp:51:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   51 |         for (auto [lx, ly, rx, ry]: v) {
      |                   ^
chessboard.cpp: In function 'int main()':
chessboard.cpp:66:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   66 |     for (auto &[a, b, c, d]: rect) cin >> a >> b >> c >> d, --a, --b, --a, --b, --c, --d;
      |                ^

• Subtask 1: 8 / 8
• Subtask 2: 8 / 8
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 0 / 23
• Subtask 6: 0 / 30