제출 #1153144

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1153144		Zero_OP	Candies (JOI18_candies)	C++20	8 / 100	15 ms	31816 KiB

candies

#include <bits/stdc++.h>

using namespace std;

#define FOR(i, l, r) for(int i = (l); i < (r); ++i)
#define ROF(i, l, r) for(int i = (l) - 1; i >= (r); --i)

#define mp make_pair
#define mt make_tuple
#define ff first
#define ss second

#define all(v) begin(v), end(v)
#define rall(v) rbegin(v), rend(v)
#define sz(v) (int)v.size()
#define sum_of(v) accumulate(all(v), 0ll)
#define pb push_back
#define eb emplace_back
#define compact(v) v.erase(unique(all(v)), end(v))

#define dbg(x) "[" #x " = " << (x) << "]"
#define file(task) if(fopen(task".inp", "r")){ \
                        freopen(task".inp", "r", stdin); \
                        freopen(task".ans", "w", stdout); }

template<typename T>
bool minimize(T& a, const T& b){
    if(a > b) return a = b, true;
    return false;
}

template<typename T>
bool maximize(T& a, const T& b){
    if(a < b) return a = b, true;
    return false;
}

using ll = long long;
using db = double;
using ld = long double;
using ull = unsigned long long;

using pi = pair<int, int>;
using pl = pair<ll, ll>;
using pd = pair<db, db>;

using vi = vector<int>;
using vl = vector<ll>;
using vb = vector<bool>;
using vd = vector<db>;
using vpi = vector<pi>;
using vpl = vector<pl>;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

const int MAX = 2e3 + 5;

int N, A[MAX];
ll dp[MAX][MAX];

void testcase(int num_testcase){
    cin >> N;
    FOR(i, 1, N+1) cin >> A[i];

    memset(dp, -0x3f, sizeof(dp));
    dp[0][0] = 0;
    dp[1][0] = 0;
    dp[1][1] = A[1];
    FOR(i, 2, N+1){
        dp[i][0] = 0;
        FOR(j, 1, (i+1)/2 + 1){
            dp[i][j] = max(dp[i-1][j], dp[i-2][j-1] + A[i]);
        }
    }

    FOR(i, 1, (N+1) / 2 + 1){
        cout << dp[N][i] << '\n';
    }
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

    file("task");

    int T = 1;
//    cin >> T;
    FOR(i, 0, T) testcase(i);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

candies.cpp: In function 'int main()':
candies.cpp:23:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |                         freopen(task".inp", "r", stdin); \
      |                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
candies.cpp:84:5: note: in expansion of macro 'file'
   84 |     file("task");
      |     ^~~~
candies.cpp:24:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |                         freopen(task".ans", "w", stdout); }
      |                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
candies.cpp:84:5: note: in expansion of macro 'file'
   84 |     file("task");
      |     ^~~~

• Subtask 1: 8 / 8
• Subtask 2: 0 / 92