Submission #521875

#	Time	Username	Problem	Language	Result	Execution time	Memory
521875		AdamGS	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	13 ms	4548 KiB

semiexpress

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
vector<ll>V;
ll n, m, k, a, b, c, t, ans;
void solve(ll dl, ll czas) {
	if(czas<0) return;
	ll p=min(czas/a+1, dl);
	ans+=p;
	dl-=p;
	czas-=c*p;
	rep(i, k) {
		if(dl<=0 || czas<0) return;
		p=min(czas/a+1, dl);
		V.pb(p);
		czas-=c*p;
		dl-=p;
	}
}
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin >> n >> m >> k >> a >> b >> c >> t; k-=m;
	ll lst=-1;
	rep(i, m) {
		ll p;
		cin >> p;
		if(i) solve(p-lst, t-(lst-1)*b);
		lst=p;
	}
	solve(1, t-(n-1)*b);
	sort(all(V));
	reverse(all(V));
	rep(i, k) if(i<V.size()) ans+=V[i];
	cout << ans-1 << '\n';
}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:39:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |  rep(i, k) if(i<V.size()) ans+=V[i];
      |               ~^~~~~~~~~

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