結果
問題 | No.1199 お菓子配り-2 |
ユーザー |
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提出日時 | 2020-08-29 05:52:24 |
言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 290 ms / 1,000 ms |
コード長 | 2,900 bytes |
コンパイル時間 | 20,284 ms |
コンパイル使用メモリ | 278,772 KB |
最終ジャッジ日時 | 2025-01-13 19:59:32 |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 45 |
ソースコード
#pragma GCC target("avx2,avx")#pragma GCC optimize("O3")#pragma GCC optimize("unroll-loops")#include <bits/stdc++.h>using namespace std;//#include <ext/pb_ds/assoc_container.hpp>//#include <ext/pb_ds/tree_policy.hpp>//using namespace __gnu_pbds;//using i128 = __int128_t;using ll = long long;using ull = unsigned long long;using pii = pair<int, int>;using pll = pair<long long, long long>;#define rep(i, n) for(int i = 0; i < (n); ++i)#define all(x) (x).begin(),(x).end()constexpr char ln = '\n';constexpr long long MOD = 1000000007;//constexpr long long MOD = 998244353;template<class T1, class T2> inline bool chmax(T1 &a, T2 b) {if (a < b) {a = b; return true;} return false;}template<class T1, class T2> inline bool chmin(T1 &a, T2 b) {if (a > b) {a = b; return true;} return false;}inline int topbit(int x) {return x == 0 ? -1 : 31-__builtin_clz(x);}inline int topbit(long long x) {return x == 0 ? -1 : 63-__builtin_clzll(x);}inline int botbit(int x) {return x == 0 ? 32 : __builtin_ctz(x);}inline int botbit(long long x) {return x == 0 ? 64 : __builtin_ctzll(x);}inline int popcount(int x) {return __builtin_popcount(x);}inline int popcount(long long x) {return __builtin_popcountll(x);}inline void print() {cout << "\n";}template<class T>inline void print(const vector<T> &v) {for (auto itr = v.begin(); itr != v.end(); ++itr) cout << *itr << " ";print();}template<class T, class... Args>inline void print(const T &x, const Args &... args) {cout << x << " ";print(args...);}#ifdef MINATO_LOCAL#define dump(x) cerr << __LINE__ << " : " << #x << " = " << (x) << endl;inline void debug() {cerr << endl;}template<class T>inline void debug(const vector<T> &v) {for (auto itr = v.begin(); itr != v.end(); ++itr) cerr << *itr << " ";debug();}template<class T, class... Args>inline void debug(const T &x, const Args &... args) {cerr << x << " ";debug(args...);}#else#define dump(x) void(0)inline void debug() {}template<class T> inline void debug(const vector<T> &v) {}template<class T, class... Args> inline void debug(const T &x, const Args &... args) {}#endifstruct Fast_ios {Fast_ios() {cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20);};} fast_ios;////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////int main() {int N,M; cin >> N >> M;vector<vector<ll>> A(N, vector<ll>(M));rep(i,N) rep(j,M) cin >> A[i][j];vector<ll> B(N);rep(i,N) B[i] = accumulate(all(A[i]),0LL);vector<vector<ll>> dp(N+1, vector<ll>(2));dp[0][1] = -1e18;rep(i,N) {rep(j,2) {chmax(dp[i+1][j],dp[i][j]);if (j) chmax(dp[i+1][j^1],dp[i][j]-B[i]);else chmax(dp[i+1][j^1],dp[i][j]+B[i]);}}cout << max(dp[N][0],dp[N][1]) << ln;}