Submission #167894

#	Time	Username	Problem	Language	Result	Execution time	Memory
167894		theStaticMind	Semiexpress (JOI17_semiexpress)	C++14	100 / 100	20 ms	6136 KiB

semiexpress

#include<bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
#define int long long int
using namespace std;

int32_t main(){
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
   //   freopen("q.gir","r",stdin);
   //   freopen("q.cik","w",stdout);
      int n,m,k,A,B,C,T,ans=-1;
      cin>>n>>m>>k>>A>>B>>C>>T;k-=m;
      vector<int>arr(m);
      vector<queue<int>>knap;
      vector<int>dp(k+1,0);
      for(int i=0;i<m;i++)cin>>arr[i];
      for(int i=1;i<m;i++){
            int L=arr[i-1];
            int R=arr[i];
            int time=(L-1)*B;
            int last=L;
            int put=0;
            int cnt=0;
            queue<int>Q;
            if(time>T)break;
            while(last<R&&put<=k&&time<=T){
                  int c=min((T-time)/A+1,R-last);
                  cnt+=c;
                  time+=c*C;
                  if(put==0)ans+=c;
                  else
                  Q.push(c);
                  put++;
                  last+=c;
            }
            if(!Q.empty())
            knap.pb(Q);
      }
      if((n-1)*B<=T)ans++;
      priority_queue<ii>Q;
      for(int i=0;i<knap.size();i++){
            Q.push({knap[i].front(),i});
            knap[i].pop();
      }
      while(k--&&!Q.empty()){
            ans+=Q.top().first;
            int x=Q.top().second;
            Q.pop();
            if(!knap[x].empty()){
                  Q.push({knap[x].front(),x});
                  knap[x].pop();
            }
      }
      cout<<ans;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int32_t main()':
semiexpress.cpp:47:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int i=0;i<knap.size();i++){
                   ~^~~~~~~~~~~~

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