제출 #533895

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
533895		idas	Feast (NOI19_feast)	C++11	41 / 100	35 ms	59052 KiB

feast

#include <bits/stdc++.h>
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define TSTS int ttt; cin >> ttt; while(ttt--) solve()
#define all(x) (x).begin(), (x).end()
#define le(vec) vec[vec.size()-1]
#define sz(x) ((int)((x).size()))
#define pb push_back
#define s second
#define f first

using namespace std;
typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef map<int, int> mii;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long double, long double> pdd;

const int INF=1e9, MOD=1e9+7, mod=998244353;
const ll LINF=1e13;

void setIO()
{
    FAST_IO;
}

void setIO(string s)
{
    FAST_IO;
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

const int N=2e3+10;
int n, k, a[N];
ll dp[N][N][2];

int main()
{
    setIO();
    cin >> n >> k;
    FOR(i, 0, n) cin >> a[i];

    FOR(i, 1, n+1)
    {
        FOR(j, 1, k+1)
        {
            dp[i][j][1]=max({
                dp[i-1][j][1]+a[i-1],
                dp[i-1][j-1][0]+a[i-1],
                dp[i-1][j-1][1]+a[i-1]
            });

            dp[i][j][0]=max({
                dp[i-1][j][1],
                dp[i-1][j][0],
                dp[i-1][j-1][1],
                dp[i-1][j-1][0]
            });
        }
    }

    cout << max(dp[n][k][0], dp[n][k][1]);
}

컴파일 시 표준 에러 (stderr) 메시지

feast.cpp: In function 'void setIO(std::string)':
feast.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 4
• Subtask 2: 0 / 8
• Subtask 3: 0 / 18
• Subtask 4: 10 / 10
• Subtask 5: 11 / 11
• Subtask 6: 20 / 20
• Subtask 7: 0 / 29