#include <bits/stdc++.h>
#define int ll
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,x,n) for(int i=x;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3MJnHrA ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e
// kactl line container
// cht on max point
// use monotocity if possible
// o(nlgn)
// APIO'10 P1
// DMOJ Yet Another Contest 2 P6 - Travel Budget
struct Line {
mutable ll k, m, p;
bool operator<(const Line& o) const { return k < o.k; }
bool operator<(ll x) const { return p < x; }
};
struct LineContainer : multiset<Line, less<>> {
// (for doubles, use inf = 1/.0, div(a,b) = a/b)
static const ll inf = LLONG_MAX;
ll div(ll a, ll b) { // floored division
return a / b - ((a ^ b) < 0 && a % b); }
bool isect(iterator x, iterator y) {
if (y == end()) return x->p = inf, 0;
if (x->k == y->k) x->p = x->m > y->m ? inf : -inf;
else x->p = div(y->m - x->m, x->k - y->k);
return x->p >= y->p;
}
void add(ll k, ll m) {
auto z = insert({k, m, 0}), y = z++, x = y;
while (isect(y, z)) z = erase(z);
if (x != begin() && isect(--x, y)) isect(x, y = erase(y));
while ((y = x) != begin() && (--x)->p >= y->p)
isect(x, erase(y));
}
ll query(ll x) {
assert(!empty());
auto l = *lower_bound(x);
return l.k * x + l.m;
}
};
using T=pair<int,pair<pii,pii>>;
using Q=pair<int,pii>;
signed main(){
_3MJnHrA;
int n,q;
cin>>n>>q;
vec(T) a(n);
rep(i,n){
int _t,_l,_r,_c;
cin>>_t>>_l>>_r>>_c;
pii s={_t,_l};
pii t={_t+abs(_r-_l),_r};
s={s.fi-s.se,s.fi+s.se};
t={t.fi-t.se,t.fi+t.se};
a[i]=T(_c,{s,t});
}
vi xys={(int)1e15};
rep(i,n){
pii s=a[i].se.fi,t=a[i].se.se;
// print(s.fi,s.se,t.fi,t.se);
xys.pb(s.fi);
xys.pb(s.se);
xys.pb(t.fi);
xys.pb(t.se);
}
sort(xys.begin(), xys.end());
xys.erase(unique(xys.begin(), xys.end()),xys.end());
auto ced=[&](int x){
return (int)(lower_bound(xys.begin(), xys.end(),x)-xys.begin());
};
int _n=sz(xys);
vec(vi) movex(_n,vi(_n)),movey;
movey=movex;
{
rep(i,n){
int cosu=a[i].fi;
pii s=a[i].se.fi,t=a[i].se.se;
int type=s.fi==t.fi;
s.fi=ced(s.fi);
s.se=ced(s.se);
t.fi=ced(t.fi);
t.se=ced(t.se);
// print(s.fi,s.se,t.fi,t.se);
if(type){
rng(j,s.se,t.se){
movey[s.fi][j]=cosu;
}
}else{
rng(j,s.fi,t.fi){
movex[j][s.se]=cosu;
}
}
}
}
vec(vi) dp(_n,vi(_n));
per(i,_n){
per(j,_n){
if(i+1<_n){
dp[i][j]=max(dp[i][j],dp[i+1][j]+(xys[i+1]-xys[i])*movex[i][j]);
}
if(j+1<_n){
dp[i][j]=max(dp[i][j],dp[i][j+1]+(xys[j+1]-xys[j])*movey[i][j]);
}
}
}
vi pns(q);
// vec(vec(Q)) adqry_y(_n),adqry_x;
// adqry_x=adqry_y;
vec(vec(vec(pii))) adqry_y(_n,vec(vec(pii))(_n)),adqry_x;
adqry_x=adqry_y;
rep(i,q){
int t,_x;
cin>>t>>_x;
pii p={t-_x,t+_x};
int x=p.fi,y=p.se;
p.fi=ced(p.fi);
p.se=ced(p.se);
pns[i]=max(pns[i],dp[p.fi][p.se]);
if(p.se){
adqry_y[p.fi][p.se].pb({y,i});
}
if(p.fi){
adqry_x[p.fi][p.se].pb({x,i});
}
// if(p.se){
// rng(i,p.fi,_n){
// ans=max(ans,dp[i][p.se]+movey[i][p.se-1]*(xys[p.se]-y));
// }
// }
// if(p.fi){
// rng(j,p.se,_n){
// ans=max(ans,dp[p.fi][j]+movex[p.fi-1][j]*(xys[p.fi]-x));
// }
// }
}
rng(i,1,_n){
LineContainer cht;
cht.add(0,0);
per(j,_n){
cht.add(-movex[i-1][j],movex[i-1][j]*xys[i]+dp[i][j]);
while(sz(adqry_x[i][j])){
pii p=adqry_x[i][j].back();
pns[p.se]=max(pns[p.se],cht.query(p.fi));
adqry_x[i][j].pop_back();
// if(p.fi==j){
// print(p.se.fi,"ho");
// pns[p.se.se]=max(pns[p.se.se],cht.query(p.se.fi));
// adqry_x[i].pop_back();
// }else{
// break;
// }
}
}
}
rng(j,1,_n){
LineContainer cht;
cht.add(0,0);
per(i,_n){
cht.add(-movey[i][j-1],movey[i][j-1]*xys[j]+dp[i][j]);
while(sz(adqry_y[i][j])){
pii p=adqry_y[i][j].back();
// print("ho",i,j,p.fi,p.se,cht.query(p.fi));
pns[p.se]=max(pns[p.se],cht.query(p.fi));
adqry_y[i][j].pop_back();
// if(p.fi==i){
// print(p.se.fi,"ho",cht.query(p.se.fi));
// pns[p.se.se]=max(pns[p.se.se],cht.query(p.se.fi));
// adqry_y[j].pop_back();
// }else{
// break;
// }
}
}
}
rep(i,q){
cout<<pns[i]/2<<"\n";
}
//
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
9271 ms |
2097152 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1284 ms |
2097152 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1284 ms |
2097152 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1284 ms |
2097152 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
9271 ms |
2097152 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
