Submission #241194

#	Time	Username	Problem	Language	Result	Execution time	Memory
241194		aggu_01000101	Semiexpress (JOI17_semiexpress)	C++14	100 / 100	31 ms	4596 KiB

semiexpress

#include <bits/stdc++.h>
#define int long long
#define INF 100000000
using namespace std;
int n, m, k, a, b, c, t;
int s[3005];
bool cmp(int a, int b){
    return a>b;
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin>>n>>m>>k>>a>>b>>c>>t;
    for(int i = 0;i<m;i++) cin>>s[i], s[i]--;
    vector<int> poss;
    int ans = 0;
    for(int i = 0;i<(m-1) && (s[i]*b <= t);i++){
        int DistanceToStation = s[i]*b;
        int RemainingDistance = t - DistanceToStation;
        int ExtraVisited = min(s[i+1] - s[i] - 1, RemainingDistance/a);
        ans += (1 + ExtraVisited);
        int SemiExpressDistance = ExtraVisited + 1;
        int SemiUsed = 0;
        while(((SemiExpressDistance + s[i]) < s[i+1]) && ((SemiExpressDistance*c + DistanceToStation)<=t) && SemiUsed < (k-m)){
            int Adding = min(s[i+1] - SemiExpressDistance - s[i] - 1, (t - SemiExpressDistance*c - DistanceToStation)/a);
            poss.push_back(Adding + 1);
            SemiUsed++;
            SemiExpressDistance += (Adding + 1);
        }
    }
    if(s[m-1]*b <= t) ans++;
    ans--;
    k-=m;
    sort(poss.begin(), poss.end(), cmp);
    for(int i = 0;i<poss.size() && i<k;i++) ans+=poss[i];
    cout<<ans<<endl;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0;i<poss.size() && i<k;i++) ans+=poss[i];
                   ~^~~~~~~~~~~~

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