Submission #484699

#	Time	Username	Problem	Language	Result	Execution time	Memory
484699		Haruto810198	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	15 ms	4548 KiB

semiexpress

#include <bits/stdc++.h>

using namespace std;

#define int long long
#define double long double

#define FOR(i, l, r, d) for(int i=(l); i<=(r); i+=(d))
#define szof(x) ((int)(x).size())

#define vi vector<int>
#define pii pair<int, int>

#define F first
#define S second

#define pb push_back
#define eb emplace_back
#define mkp make_pair

const int INF = 2147483647;
const int LNF = INF*INF;
const int MOD = 1000000007;
const int mod = 998244353;
const double eps = 1e-12;

//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")

const int MAX = 3010;

int n, m, k;
int a, b, c;
int T;
pii seg[MAX];
vi vals;
int res;

void solve(int id){
	
	int from = seg[id].F;
	int to = seg[id].S;
	int rem_T = T - (from - 1) * b;
	if(rem_T < 0) return;
	
	int ptr = from;
	int next_tle = ptr + (rem_T + a) / a;
	if(next_tle >= to + 1) next_tle = to + 1;

	res += next_tle - ptr;
	rem_T -= (next_tle - ptr) * c;
	ptr = next_tle;
	
	int cnt = 0;
	while(rem_T >= 0 and ptr <= to){
		next_tle = ptr + (rem_T + a) / a;
		if(next_tle >= to + 1) next_tle = to + 1;
		vals.pb(next_tle - ptr);
		rem_T -= (next_tle - ptr) * c;
		ptr = next_tle;
		cnt++;
		if(cnt == k - m) return;
	}
	
}

signed main(){

    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
	
	cin>>n>>m>>k;
	cin>>a>>b>>c;
	cin>>T;
	FOR(i, 1, m, 1){
		cin>>seg[i].F;
	}
	FOR(i, 1, m-1, 1){
		seg[i].S = seg[i+1].F - 1;
	}
	
	FOR(i, 1, m-1, 1){
		solve(i);
	}
	
	//cerr<<"res = "<<res<<endl;
	//cerr<<"vals : ";
	for(int i : vals){
		//cerr<<i<<" ";
	}
	//cerr<<endl;

	sort(vals.begin(), vals.end());
	reverse(vals.begin(), vals.end());
	
	int cnt = min(k - m, szof(vals));
	FOR(i, 0, cnt - 1, 1){
		res += vals[i];
	}
	
	res--;
	if(b * (n-1) <= T) res++;
	
	cout<<res<<'\n';
	
    return 0;

}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:89:10: warning: unused variable 'i' [-Wunused-variable]
   89 |  for(int i : vals){
      |          ^

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