Submission #696230

#	Time	Username	Problem	Language	Result	Execution time	Memory
696230		aSSSd	Holding (COCI20_holding)	C++14	110 / 110	91 ms	100840 KiB

holding

#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rnd(int l,int r)
{
    return l+rng()%(r-l+1);
}
#define fasty ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define forinc(x,a,b) for(int x=a;x<=b;x++)
#define fordec(x,a,b) for(int x=a;x>=b;x--)
#define iii pair<ii,int>
#define fi first
#define se second
#define ii pair<int,int>
#define getbit(x,i) ((x>>(i))&1ll)
#define batbit(x,i) (x|(1ll<<(i)))
#define tatbit(x,i) (x&~(1ll<<(i)))
#define endl '\n'
//#define int long long
#define pb push_back
#define ll long long
const int N = 103;
const int K = 1e4+3;
int n,L,R,k;
int a[N];
int f[N][N][2510];
main()
{
    fasty;
    cin >> n >> L >> R >> k;
    vector<ii> c;
    vector<ii> d;
    k=min(k , n*n / 4);
    int sum=0;
    forinc(i,1,n)
    {
        cin >> a[i];
        if(i<L || i > R) c.pb({a[i] , i});
        else
        {
            d.pb({a[i] ,i});
            sum+=a[i];
        }
    }
    forinc(i,0,n) forinc(j,0,n) forinc(t,0,k) f[i][j][t]=sum;
    int n1 = c.size();
    int n2 = d.size();
    int res=sum;
    forinc(i,1,n1) forinc(j,1,n2) forinc(t,0,k)
    {
        int cost = abs(c[i-1].se - d[j-1].se);
        f[i][j][t] = min(f[i-1][j][t] , f[i][j-1][t]);
        if(t) f[i][j][t] = min(f[i][j][t] , f[i][j][t-1]);
        if(t>=cost)
        {
            f[i][j][t] = min(f[i-1][j-1][t-cost] - d[j-1].fi + c[i-1].fi , f[i][j][t]);
        }
    }
    forinc(i,1,n1) forinc(j,1,n2) forinc(t,0,k)
    {
        res = min(res , f[i][j][t]);
    }
    cout << res;
}

Compilation message (stderr)

holding.cpp:27:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   27 | main()
      | ^~~~

• Subtask 1: 22 / 22
• Subtask 2: 33 / 33
• Subtask 3: 33 / 33
• Subtask 4: 22 / 22