Submission #987258

#	Time	Username	Problem	Language	Result	Execution time	Memory
987258		yeediot	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	7 ms	4700 KiB

semiexpress

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
#define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
#define __lg(x) 63-__builtin_clzll(x)
#define pow2(x) (1LL<<x)
void __print(int x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef local
void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
void setio(){}
#define debug(x...)
#endif
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
#define why_TOI_is_so_de ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);setio();
int n, m, k, a, b, c, t, ans;
vector<int>s;
signed main(){
    why_TOI_is_so_de;
    cin>>n>>m>>k>>a>>b>>c>>t;
    for(int i=0,x;i<m;i++){
        cin>>x;
        s.pb(x);
    }
    priority_queue<int>pq;
    ans=-1;
    if((n-1)*b<=t)ans++;
    for(int i=0;i+1<m;i++){
        int cur=(s[i]-1)*b;
        if(cur>t)break;
        int nxt=min(s[i]+(t-cur)/a,s[i+1]-1);
        ans+=nxt-s[i]+1;
        debug(nxt,cur);
        for(int j=1;j<=k-m;j++){
            int st=nxt+1;if(st>=s[i+1])break;
            int left=t-cur-(st-s[i])*c;
            if(left<0)break;
            nxt=min(st+left/a,s[i+1]-1);
            debug(nxt,ans);
            pq.push(nxt-st+1);
        }
    }
    while(sz(pq) and k-m){
        ans+=pq.top();
        debug(pq.top());
        pq.pop();
        k--;
    }
    cout<<ans<<'\n';
    #ifdef local
        cerr << "\n[Time]: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
    #endif
}
/*
input:
 
*/















 

Compilation message (stderr)

semiexpress.cpp: In function 'void setIO(std::string)':
semiexpress.cpp:42:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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