Submission #871142

#	Time	Username	Problem	Language	Result	Execution time	Memory
871142		winter0101	Two Dishes (JOI19_dishes)	C++14	74 / 100	4116 ms	259624 KiB

dishes

#include<bits/stdc++.h>
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
#define pil pair<int,long long>
const int maxn=1e6+9;
long long a[maxn],b[maxn],s[maxn],t[maxn],p[maxn],q[maxn];
long long f[maxn];
struct IT{
vector<long long>st;
void resz(int n){
st.resize(4*n+9);
}
void update(int id,int l,int r,int u,long long val){
if (l>u||r<u)return;
if (l==r){
    st[id]=val;
    return;
}
int mid=(l+r)/2;
update(id*2,l,mid,u,val);
update(id*2+1,mid+1,r,u,val);
st[id]=min(st[id*2],st[id*2+1]);
}
void cong(int id,int l,int r,int u,long long val){
if (l>u||r<u)return;
if (l==r){
    st[id]+=val;
    return;
}
int mid=(l+r)/2;
cong(id*2,l,mid,u,val);
cong(id*2+1,mid+1,r,u,val);
st[id]=min(st[id*2],st[id*2+1]);
}
long long get(int id,int l,int r,int u,int v){
if (l>v||r<u||u>v)return 2e15;
if (u<=l&&r<=v)return st[id];
int mid=(l+r)/2;
return min(get(id*2,l,mid,u,v),get(id*2+1,mid+1,r,u,v));
}
int findlow(int id,int l,int r){
if (st[id]>=0)return -1;
if (l==r)return l;
int mid=(l+r)/2;
if (st[id*2]<0)return findlow(id*2,l,mid);
else return findlow(id*2+1,mid+1,r);
}
}st;
vector<int>del[maxn];
long long g[maxn];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen("temp.OUT","w",stdout);
    int n,m;
    cin>>n>>m;
    for1(i,1,n)cin>>a[i]>>s[i]>>p[i];
    for1(i,1,m)cin>>b[i]>>t[i]>>q[i];
    for1(i,1,n)a[i]+=a[i-1];
    for1(i,1,m)b[i]+=b[i-1];
    f[0]=0;
    long long prefixsum=0,mx=0;
    set<int>opt;
    opt.insert(0);
    st.resz(m+1);
    st.update(1,0,m,0,f[0]);
    for1(i,1,m){
    f[i]=f[i-1];
    if (b[i]<=t[i]){
    f[i]+=q[i];
    prefixsum+=q[i];
    }
    if (f[i]-prefixsum>mx){
    st.update(1,0,m,i,f[i]-prefixsum-mx);
    opt.insert(i);
    g[i]=f[i]-prefixsum-mx;
    mx=f[i]-prefixsum;
    }
    }
    for1(i,1,m){
    if (b[i]>t[i])continue;
    int l=1,r=n,ans=-1;
    while (l<=r){
    int mid=(l+r)/2;
    if (a[mid]+b[i]>t[i]){
    ans=mid;
    r=mid-1;
    }
    else l=mid+1;
    }
    if (ans!=-1)del[ans].pb(i);
    }
    for1(i,1,n){
    int l=0,r=m,ans=-1;
    while (l<=r){
    int mid=(l+r)/2;
    if (a[i]+b[mid]<=s[i]){
    ans=mid;
    l=mid+1;
    }
    else r=mid-1;
    }
    if (ans!=-1){
    st.cong(1,0,m,0,p[i]);
    st.cong(1,0,m,ans+1,-p[i]);
    opt.insert(ans+1);
    }
    for (auto v:del[i]){
    st.cong(1,0,m,v,q[v]);
    opt.insert(v);
    //cout<<i<<" "<<v<<'\n';
    }
    while (st.st[1]<0){
    int pos=st.findlow(1,0,m);
    auto it=opt.upper_bound(pos);
    if (it==opt.end()){
    st.update(1,0,m,pos,0);
    }
    else {
    long long val=st.get(1,0,m,(*it),(*it))+st.get(1,0,m,pos,pos);
    st.update(1,0,m,pos,0);
    st.update(1,0,m,(*it),val);
    }
    opt.erase(pos);
    }
    }
    prefixsum=0,mx=0;
    for1(i,0,m){
    mx+=st.get(1,0,m,i,i);
    if (a[n]+b[i]<=t[i])prefixsum+=q[i];
    //cout<<i<<" "<<prefixsum<<" "<<st.get(1,0,m,i,i)<<" "<<mx+prefixsum<<'\n';
    }
    cout<<prefixsum+mx;
    //for1(i,0,m)cout<<st.get(1,0,m,i,i)<<'\n';
    //cout<<st.get(1,0,m,0,0)+st.get(1,0,m,1,1)+st.get(1,0,m,2,2);
}

• Subtask 1: 5 / 5
• Subtask 2: 3 / 3
• Subtask 3: 7 / 7
• Subtask 4: 39 / 39
• Subtask 5: 11 / 11
• Subtask 6: 9 / 9
• Subtask 7: 0 / 17
• Subtask 8: 0 / 9