Submission #881051

#	Time	Username	Problem	Language	Result	Execution time	Memory
881051		cpptowin	수열 (APIO14_sequence)	C++17	11 / 100	2066 ms	6748 KiB

sequence

#include<bits/stdc++.h>
#define fo(i,d,c) for(int i=d;i<=c;i++)
#define fod(i,c,d) for(int i=c;i>=d;i--)
#define maxn 1000010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout<<"\n";
#define int long long
#define inf 1000000000
#define pii pair<int,int>
#define vii vector<pii>
#define lb(x) x&-x
#define bit(i,j) ((i>>j)&1)
#define offbit(i,j) (i^(1<<j))
#define onbit(i,j) (i|(1<<j))
#define vi vector<int>
template <typename T1, typename T2> bool minimize(T1 &a, T2 b){if (a > b) {a = b; return true;} return false;}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b){if (a < b) {a = b; return true;} return false;}
using namespace std;
int n,k;
int a[maxn];
int pre[maxn];
int sum(int l,int r)
{
    return pre[r] - pre[l - 1];
}
namespace sub1 
{
    int solve(int l,int r,int k,vi &v)
    {
        if(k > r - l + 1) return 0;
        if(k == 0 or l == r) return 0;
        int ans = 0;
        vi cc;
        int pos = l,sl = 0;
        fo(i,l,r - 1)
        {
            fo(j,0,k - 1)
            {
                int val = solve(l,i,j,cc) + solve(i + 1,r,k - j - 1,cc) + sum(l,i) * sum(i + 1,r);
                if(ans < val)
                {
                    ans = val;
                    pos = i;
                    sl = j;
                }
            }
        }
        v.pb(pos);
        solve(l,pos,sl,v);
        solve(pos + 1,r,k - sl - 1,v);
        return ans;
    }
}
main()
{
    #define name "TASK"
    if(fopen(name".inp","r"))
    {
       freopen(name".inp","r",stdin);
       freopen(name".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    cin >> n >> k;
    fo(i,1,n)
    {
        cin >> a[i];
        pre[i] = pre[i - 1] + a[i];
    }
    if(n <= 50) 
    {
        vi v;
        cout << sub1::solve(1,n,k,v);en;
        sort(v.begin(),v.end());
        for(int it : v) cout << it << ' ';
    }
}

Compilation message (stderr)

sequence.cpp:57:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   57 | main()
      | ^~~~
sequence.cpp: In function 'int main()':
sequence.cpp:62:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |        freopen(name".inp","r",stdin);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
sequence.cpp:63:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |        freopen(name".out","w",stdout);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 17
• Subtask 5: 0 / 21
• Subtask 6: 0 / 29