Submission #129361

#	Time	Username	Problem	Language	Result	Execution time	Memory
129361		BThero	Candies (JOI18_candies)	C++17	8 / 100	319 ms	64168 KiB

candies

// Why am I so dumb? :c
// chrono::system_clock::now().time_since_epoch().count()
 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
 
#define pb push_back
#define mp make_pair
 
#define all(x) (x).begin(), (x).end()
 
#define fi first
#define se second
 
using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;   
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
const int MAXN = (int)2e3 + 5;
const ll INF = (ll)1e18;
 
ll dp[MAXN][MAXN];
 
int arr[MAXN];
 
int n;
 
void solve() {
    scanf("%d", &n);
 
    for (int i = 1; i <= n; ++i) {
        scanf("%d", &arr[i]);
    }
 
    for (int i = 0; i <= n; ++i) {
        for (int j = 1; j <= n; ++j) {
            dp[i][j] = -INF;
        }
    }
 
    dp[1][0] = 0;
    dp[1][1] = arr[1];
 
    for (int i = 2; i <= n; ++i) {
        for (int j = 0; j <= i; ++j) {
            dp[i][j] = dp[i - 1][j];
            
            if (j > 0) {
                dp[i][j] = max(dp[i][j], dp[i - 2][j - 1] + arr[i]);
            }
        }
    }    

    int p = 1;

    while (dp[n][p] <= dp[n][p + 1]) {
        ++p;
    }

    for (int i = p; i + 1 <= (n + 1) / 2; ++i) {
        assert(dp[n][i] >= dp[n][i + 1]);
    }
 
    for (int i = 1; i <= (n + 1) / 2; ++i) {
        printf("%lld\n", dp[n][i]);
    }
}
 
int main() {
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
 
    int tt = 1;
 
    while (tt--) {
        solve();
    }
 
    return 0;
}

Compilation message (stderr)

candies.cpp: In function 'void solve()':
candies.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
candies.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &arr[i]);
         ~~~~~^~~~~~~~~~~~~~~

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