Submission #1242851

#	Time	Username	Problem	Language	Result	Execution time	Memory
1242851		hainam2k9	Holding (COCI20_holding)	C++20	110 / 110	156 ms	12508 KiB

holding

#include <bits/stdc++.h>
#define tt cin.tie(0), cout.tie(0), ios_base::sync_with_stdio(0)
#define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
#define ll long long
#define ull unsigned long long
#define i128 __int128
#define db long double
#define sz(a) ((int)(a).size())
#define pb emplace_back
#define pf emplace_front
#define pob pop_back
#define pof pop_front
#define lb lower_bound
#define ub upper_bound
#define fi first
#define se second
#define ins emplace
#define mp make_pair
using namespace std;
const int MOD = 1e9+7, MAXN = 1e5+5, offset = 100;
const string NAME = "";
int n,l,r,k,a[105],dp[205][10005],nxtdp[205][10005],rs=1e9;
inline void chmin(int& a, int b){
    a=min(a,b);
}
int main()
{
    tt;
    if(fopen((NAME + ".INP").c_str(), "r")) fo;
    cin >> n >> l >> r >> k;
    for(int i = 1; i<=n; ++i)
        cin >> a[i];
    int sz=r-l+1;
    memset(nxtdp,0x3f,sizeof(nxtdp));
    nxtdp[offset][0]=accumulate(a+l,a+r+1,0);
    for(int i = 0; i<n; ++i){
        for(int j = -sz; j<=sz; ++j)
            for(int cost = 0; cost<=k; ++cost)
                dp[j+offset][cost]=nxtdp[j+offset][cost], nxtdp[j+offset][cost]=1e9;
        for(int j = -sz; j<=sz; ++j)
            for(int cost = 0; cost<=k; ++cost){
                if(dp[j+offset][cost]>=1e9) continue;
                int newcost=cost+abs(j);
                if(newcost>k) continue;
                chmin(nxtdp[j+offset][newcost],dp[j+offset][cost]);
                if(j<sz&&(i+1<l||i+1>r)) chmin(nxtdp[j+1+offset][newcost],dp[j+offset][cost]+a[i+1]);
                if(j>-sz&&i+1>=l&&i+1<=r) chmin(nxtdp[j-1+offset][newcost],dp[j+offset][cost]-a[i+1]);
            }
    }
    for(int cost = 0; cost<=k; ++cost)
        rs=min(rs,nxtdp[offset][cost]);
    cout << rs;
}

Compilation message (stderr)

holding.cpp: In function 'int main()':
holding.cpp:3:19: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
holding.cpp:29:45: note: in expansion of macro 'fo'
   29 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
holding.cpp:3:63: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |                                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
holding.cpp:29:45: note: in expansion of macro 'fo'
   29 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~

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