제출 #1265046

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1265046		trandangquang	Semiexpress (JOI17_semiexpress)	C++20	100 / 100	0 ms	328 KiB

semiexpress

#include <bits/stdc++.h>
using namespace std;

#define foru(i,a,b) for(int i=(a); i<=(b); ++i)
#define ford(i,a,b) for(int i=(a); i>=(b); --i)
#define rep(i,a) for(int i=0; i<(a); ++i)
#define bit(s,i) (((s)>>(i))&1)
#define all(a) (a).begin(),(a).end()
#define sz(a) (int)(a).size()
#define ii pair<int,int>
#define fi first
#define se second
#define int long long
#define eb emplace_back
#define pb push_back
#define ll long long
#define __builtin_popcount(a) __builtin_popcountll(a)

template <class X, class Y>
    bool maxi(X &x, Y y){
        if(x<y){
            x=y;
            return true;
        }
        return false;
    }

template <class X, class Y>
    bool mini(X &x, Y y){
        if(x>y){
            x=y;
            return true;
        }
        return false;
    }

const int N=3030;

int n,m,k,a,b,c,s[N]; ll t;

int calc(int i, int num){
    ll tim=(s[i]-1)*b;
    if(tim+num*c>t) return 0;
    return min(s[i+1]-s[i]-num, (t-tim-num*c)/a + 1);
}

void solve(){
    cin>>n>>m>>k>>a>>b>>c>>t;
    foru(i,1,m) cin>>s[i];

    int res=0;

    priority_queue<pair<int,ii>> pq;

    k-=m;
    s[m+1]=n+1;
    foru(i,1,m){
        ll tim=1LL*(s[i]-1)*b;
        if(tim>t) continue;

        int add=min(s[i+1]-s[i], (t-tim)/a + 1);
        res+=add;
        pq.push({calc(i,add),{i,add}});
    }

    while(pq.size() && k>0){
        int add=pq.top().fi,
            i=pq.top().se.fi,
            j=pq.top().se.se;
        pq.pop();

        res+=add; --k;
        j+=add;
        pq.push({calc(i,j),{i,j}});
    }

    cout<<res-1<<'\n';
}

int32_t main(){
    #define task "test"
    if(fopen(task".inp","r")){
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    cin.tie(0)->sync_with_stdio(0);

    solve();
}

컴파일 시 표준 에러 (stderr) 메시지

semiexpress.cpp: In function 'int32_t main()':
semiexpress.cpp:83:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
semiexpress.cpp:84:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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