結果
問題 | No.818 Dinner time |
ユーザー | Pachicobue |
提出日時 | 2019-04-23 18:33:48 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 53 ms / 2,000 ms |
コード長 | 3,883 bytes |
コンパイル時間 | 1,829 ms |
コンパイル使用メモリ | 203,504 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-05-07 08:25:02 |
合計ジャッジ時間 | 3,587 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 46 ms
5,376 KB |
testcase_18 | AC | 33 ms
5,376 KB |
testcase_19 | AC | 35 ms
5,376 KB |
testcase_20 | AC | 47 ms
5,376 KB |
testcase_21 | AC | 43 ms
5,376 KB |
testcase_22 | AC | 32 ms
5,376 KB |
testcase_23 | AC | 37 ms
5,376 KB |
testcase_24 | AC | 53 ms
5,376 KB |
testcase_25 | AC | 37 ms
5,376 KB |
testcase_26 | AC | 30 ms
5,376 KB |
testcase_27 | AC | 46 ms
5,376 KB |
testcase_28 | AC | 38 ms
5,376 KB |
testcase_29 | AC | 48 ms
5,376 KB |
testcase_30 | AC | 41 ms
5,376 KB |
testcase_31 | AC | 45 ms
5,376 KB |
testcase_32 | AC | 39 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> #pragma GCC diagnostic ignored "-Wsign-compare" #pragma GCC diagnostic ignored "-Wsign-conversion" #define NDEBUG #define SHOW(...) static_cast<void>(0) //!===========================================================!// //! dP dP dP !// //! 88 88 88 !// //! 88aaaaa88a .d8888b. .d8888b. .d888b88 .d8888b. 88d888b. !// //! 88 88 88ooood8 88' '88 88' '88 88ooood8 88' '88 !// //! 88 88 88. ... 88. .88 88. .88 88. ... 88 !// //! dP dP '88888P' '88888P8 '88888P8 '88888P' dP !// //!===========================================================!// using ld = long double; using uint = unsigned int; using ll = long long; using ull = unsigned long long; constexpr unsigned int MOD = 1000000007; template <typename T> constexpr T INF = std::numeric_limits<T>::max() / 4; template <typename F> constexpr F PI = static_cast<F>(3.1415926535897932385); std::mt19937 mt{std::random_device{}()}; template <typename T> bool chmin(T& a, const T& b) { return a = std::min(a, b), a == b; } template <typename T> bool chmax(T& a, const T& b) { return a = std::max(a, b), a == b; } template <typename T> std::vector<T> Vec(const std::size_t n, T v) { return std::vector<T>(n, v); } template <class... Args> auto Vec(const std::size_t n, Args... args) { return std::vector<decltype(Vec(args...))>(n, Vec(args...)); } template <typename T> constexpr T popCount(const T u) { #ifdef __has_builtin return u == 0 ? T(0) : (T)__builtin_popcountll(u); #else unsigned long long v = static_cast<unsigned long long>(u); return v = (v & 0x5555555555555555ULL) + (v >> 1 & 0x5555555555555555ULL), v = (v & 0x3333333333333333ULL) + (v >> 2 & 0x3333333333333333ULL), v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0FULL, static_cast<T>(v * 0x0101010101010101ULL >> 56 & 0x7f); #endif } template <typename T> constexpr T log2p1(const T u) { #ifdef __has_builtin return u == 0 ? T(0) : T(64 - __builtin_clzll(u)); #else unsigned long long v = static_cast<unsigned long long>(u); return v = static_cast<unsigned long long>(v), v |= (v >> 1), v |= (v >> 2), v |= (v >> 4), v |= (v >> 8), v |= (v >> 16), v |= (v >> 32), popCount(v); #endif } template <typename T> constexpr T clog(const T v) { return v == 0 ? T(0) : log2p1(v - 1); } template <typename T> constexpr T msbp1(const T v) { return log2p1(v); } template <typename T> constexpr T lsbp1(const T v) { #ifdef __has_builtin return __builtin_ffsll(v); #else return v == 0 ? T(0) : popCount((v & (-v)) - T(1)) + T(1); #endif } template <typename T> constexpr bool ispow2(const T v) { return popCount(v) == 1; } template <typename T> constexpr T ceil2(const T v) { return v == 0 ? T(1) : T(1) << log2p1(v - 1); } template <typename T> constexpr T floor2(const T v) { return v == 0 ? T(0) : T(1) << (log2p1(v) - 1); } //!============================================!// //! 8888ba.88ba oo !// //! 88 '8b '8b !// //! 88 88 88 .d8888b. dP 88d888b. !// //! 88 88 88 88' '88 88 88' '88 !// //! 88 88 88 88. .88 88 88 88 !// //! dP dP dP '88888P8 dP dP dP !// //!============================================!// int main() { int N, M; std::cin >> N >> M; std::vector<ll> A(N), B(N); for (int i = 0; i < N; i++) { std::cin >> A[i] >> B[i]; } ll ans = -INF<ll>; ll p0 = 0, p1 = -INF<ll>, p2 = -INF<ll>; for (int i = 0; i < N; i++) { p2 = std::max(p1, p2) + std::max(A[i], B[i]); p1 = std::max(p1 + std::max(B[i], A[i] * (ll)M + std::max(0LL, B[i] - A[i])), p0 + A[i] * (ll)M + std::max(0LL, B[i] - A[i])); p0 += B[i]; chmax(ans, std::max({p0, p1, p2})); } std::cout << ans << std::endl; return 0; }