Submission #1095825

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095825		modwwe	Long Distance Coach (JOI17_coach)	C++17	100 / 100	114 ms	21188 KiB

coach

#pragma GCC optimize("Ofast,unroll-loops")
#include<bits/stdc++.h>
#define int long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
}

void phongbeo();
const int inf = 1e18;
const int mod2 = 1e9 + 7;
const int  mod1 = 998244353;
struct icd
{
    long double a;
    int b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a, b, c;
};
struct id
{
    int a, b, c, d;
};
struct ie
{
    int a, b, c, d, e;

};

int n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, l, r, mid, l2, r2, center;
int  i, s10, s12,k1,k2,s11,t,lim,w;
int kk;
int el = 19;
main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        fou(task);
    }
    NHP
    /// cin>>s1;
///modwwe
    phongbeo();
    // checktime
}
int a[200002];
ib b[200002];
int d[200002];
int c[200002];
int dp[200002];
int f[200002];
bool cmp(ib x,ib y)
{
    return x.a<y.a;
}
struct line
{
    int a,b,p;
    bool operator<(line l)
    {
        return a>l.a;
    }
    bool operator<(int k)
    {
        return p<k;
    }
};
struct cvht
{
    vector<line> x;
    int div(int a,int b)
    {
        return a/b-((a^b)<0 && a%b);
    }
    bool isect(line &l,line y)
    {
        if(l.a==y.a) l.p=(l.b<y.b)?inf:-inf;
        else l.p=div(y.b-l.b,l.a-y.a);
        return l.p>=y.p;
    }
    void add(line l)
    {
        if(!x.empty()) isect(x.back(),l);
        while((int)x.size()>=2 && x[(int)x.size()-2].p>=x.back().p)
        {
            x.pop_back();
            isect(x.back(),l);
        }
        x.push_back(l);
    }
    int query(int v)
    {
        auto l=*lower_bound(x.begin(),x.end(),v);
        return l.a*v+l.b;
    }
} cht;
void phongbeo()
{
    cin>>lim>>n>>m>>k>>t;
    for(int i=1; i<=n; i++)
        cin>>a[i];
    sort(a+1,a+1+n);
    for(int i=1; i<=m; i++)
        cin>>b[i].a>>b[i].b;
    sort(b+1,b+1+m,cmp);
    for(int i=1; i<=m; i++)
        d[i]=b[i].a,c[i]=b[i].b;
    a[n+1]=lim;
    for(int i=1; i<=n+1; i++)
    {
        s2=a[i]%t;
        s3=upper_bound(d+1,d+1+m,s2)-d-1;
        if(f[s3]==0)
            f[s3]=i;
    }
    for(int i=1; i<=m; i++)
        c[i]+=c[i-1];
    /// dpi la da duyet het con tren i
    dp[0]=(lim/t)*k+k;
    cht.add({0,dp[0],inf});
    for(int i=1; i<=m; i++)
    {
        if(lim>=d[i])
            dp[i]=dp[i-1]+((lim-d[i])/t)*k+k;
        if(f[i]!=0)
        {
            dp[i]=min(dp[i],cht.query((a[f[i]]/t)*k)+i*(a[f[i]]/t)*k+c[i]);
            ///for(int j=0; j<i; j++){
            /// dp[i]=min(dp[i],dp[j]+(i-j)*(a[f[i]]/t)*k+c[i]-c[j]);
        }
        cht.add({-i,dp[i]-c[i],inf});
    }

    cout<<dp[m];
}

Compilation message (stderr)

coach.cpp:67:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   67 | main()
      | ^~~~
coach.cpp: In function 'int main()':
coach.cpp:12:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
coach.cpp:71:9: note: in expansion of macro 'fin'
   71 |         fin(task);
      |         ^~~
coach.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fou(x) freopen(x".out","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
coach.cpp:72:9: note: in expansion of macro 'fou'
   72 |         fou(task);
      |         ^~~

• Subtask 1: 16 / 16
• Subtask 2: 30 / 30
• Subtask 3: 25 / 25
• Subtask 4: 29 / 29