Submission #65169

#	Time	Username	Problem	Language	Result	Execution time	Memory
65169		keko37	Semiexpress (JOI17_semiexpress)	C++14	100 / 100	6 ms	1540 KiB

semiexpress

#include<iostream>
#include<queue>

using namespace std;

typedef long long llint;

const int MAXN = 3005;

llint n, m, k, t, a, b, c, lim, sol;
llint s[MAXN], d[MAXN];
priority_queue < pair <llint, int> > pq;

llint val (int ind) {
	llint ost = (t - (s[ind]-1)*b - (s[ind+1]-s[ind]-1 - d[ind])*c);
	if (ost < c) return 0; return min(d[ind], 1 + (ost - c)/a);
}

int main () {
	cin >> n >> m >> k >> a >> b >> c >> t;
	for (int i=1; i<=m; i++) {
		cin >> s[i];
	}
	for (int i=m; i>=1; i--) {
		if (t >= (s[i]-1) * b) {
			lim = i;
			break;
		}
	}
	for (int i=1; i<=min(lim, m-1); i++) {
		d[i] = max(0LL, (s[i+1]-s[i]-1) - (t-(s[i]-1)*b) / a);
		pq.push(make_pair(val(i), i));
	}
	for (int i=0; i<k-m; i++) {
		llint v = pq.top().first;
		int ind = pq.top().second;
		pq.pop();
		d[ind] -= v;
		pq.push(make_pair(val(ind), ind));
	}
	for (int i=1; i<=min(lim, m-1); i++) {
		sol += s[i+1] - s[i] - d[i];
	}
	cout << sol + (lim == m) - 1;
	return 0;
}

Compilation message (stderr)

semiexpress.cpp: In function 'llint val(int)':
semiexpress.cpp:16:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if (ost < c) return 0; return min(d[ind], 1 + (ost - c)/a);
  ^~
semiexpress.cpp:16:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  if (ost < c) return 0; return min(d[ind], 1 + (ost - c)/a);
                         ^~~~~~

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