#542124 (C++14) No.1199 お菓子配り-2

• 問題: No.1199 お菓子配り-2
• ユーザー: homesentinel
• 提出日時: 2020-08-28 22:06:13
• 言語: C++14 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 115 ms / 1,000 ms
• コード長: 2,890 bytes
• コンパイル時間: 1,395 ms
• コンパイル使用メモリ: 118,308 KB
• 実行使用メモリ: 6,820 KB
• 最終ジャッジ日時: 2024-11-14 03:31:57
• 合計ジャッジ時間: 8,278 ms
• ジャッジサーバーID （参考情報）: judge5 / judge3

ファイルパターン	結果
sample	AC * 3
other	AC * 45

ソースコード

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#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <climits>
#include <cstring>
#include <cassert>
using namespace std;
#define SZ(x) (int)(x.size())
#define REP(i, n) for(int i=0;i<n;++i)
#define FOR(i, a, b) for(int i=a;i<b;++i)
#define RREP(i, n) for(int i=n-1;i>=0;--i)
#define RFOR(i, a, b) for(int i=b-1;i>=a;--i)
#define all(x) begin(x),end(x)
#define dump(x) cerr<<#x<<" = "<<(x)<<endl
#define debug(x) cerr<<#x<<" = "<<(x)<<" (L"<<__LINE__<<")"<< endl;
using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using P = pair<int, int>;
const double eps = 1e-8;
const ll MOD = 1000000007;
const int INF = INT_MAX / 2;
const ll LINF = LLONG_MAX / 2;
template<class T>
bool chmax(T &a, const T &b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
template<class T>
bool chmin(T &a, const T &b) {
    if (b < a) {
        a = b;
        return true;
    }
    return false;
}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> p) {
    os << p.first << ":" << p.second;
    return os;
}
template<class T>
ostream &operator<<(ostream &os, const vector<T> &v) {
    os << "[";
    REP(i, SZ(v)) {
        if (i) os << ", ";
        os << v[i];
    }
    return os << "]";
}
template<class T1, class T2>
ostream &operator<<(ostream &os, const map<T1, T2> &mp) {
    os << "[";
    for (auto it = mp.begin(); it != mp.end(); ++it) {
        if (it != mp.begin()) {
            os << ", ";
        }
        os << *it;
    }
    return os << "]";
}
// edit
void solve() {
    int N, M;
    cin >> N >> M;
    vector<ll> A(N);
    REP(i, N) {
        REP(j, M) {
            ll tmp;
            cin >> tmp;
            A[i] += tmp;
        }
    }
    vector<vector<ll>> dp(N + 1, vector<ll>(2, -LINF));
    dp[0][0] = 0;
    for (int i = 0; i < N; ++i) {
        for (int j = 0; j < 2; ++j) {
            chmax(dp[i + 1][j ^ 1], dp[i][j] + (1 - 2 * j) * A[i]);
            chmax(dp[i + 1][j], dp[i][j]);
        }
    }
    ll ans = max(dp[N][0], dp[N][1]);
    cout << ans << endl;
}
int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
//    std::ifstream in("input.txt");
//    std::cin.rdbuf(in.rdbuf());
    solve();
    return 0;
}
 
 
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