Submission #875987

#	Time	Username	Problem	Language	Result	Execution time	Memory
875987		ReLice	Semiexpress (JOI17_semiexpress)	C++14	18 / 100	0 ms	348 KiB

semiexpress

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define pb push_back
#define endl "\n"
#define fr first
#define sc second
#define sz size()
#define ins insert
#define bc back()
#define str string
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<ll, null_type,less<ll>, rb_tree_tag,tree_order_statistics_node_update>
void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const ll inf=1e18+7;
const ll mod=1e9;
const ll N=2e5+7;
const ld eps=1e-9;

void solve(){
    ll i,j;
    ll n,m,k,a,b,c,t,ans=0;
    cin>>n>>m>>k>>a>>b>>c>>t;
    vector<ll> v(m,0),d(m,0);
	for(i=0;i<m;i++){
		cin>>v[i];
		d[i]=(v[i]-1)*b;
		if(d[i]>0 && d[i]<=t)ans++;
	}
	k-=m;
	vector<ll> vv;
	for(i=0;i<m-1;i++){
		if(d[i]>t)break;
		ans+=min((t-d[i])/a,v[i+1]-v[i]-1);
		if((t-d[i])/a>=v[i+1]-v[i])continue;
		ll x=v[i]+(t-d[i])/a+1,dd;
		for(j=0;j<k;j++){
			dd=(t-d[i]-(x-v[i])*c);
			if(dd<0 || x==v[i+1])break;
			vv.pb(min(dd/a+1,v[i+1]-x));
			x+=dd/a+1;
		}
	}
	sort(rall(vv));
	for(i=0;i<k && i<(ll)vv.sz;i++){
		ans+=vv[i];
	}cout<<ans<<endl;
}

signed main(){
    start();
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    ll t=1;
    //cin>>t;
    while(t--) solve();
}
/*









*/

Compilation message (stderr)

semiexpress.cpp: In function 'void fre(std::string)':
semiexpress.cpp:19:27: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 | void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:19:64: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 | void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                                                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 0 / 30
• Subtask 3: 0 / 52