#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define iiii tuple<ll,ll,ll,ll>
const ll maxn=1e5+5;
const ll inf=1e15;
struct node{
ll s,e,m,val;
node *l,*r;
node(ll _s, ll _e){
s=_s,e=_e,m=(s+e)>>1,val=inf;
if (s!=e) l=new node(s,m),r=new node(m+1,e);
}
void upd(ll x, ll v){
if (s==e){
val=v;
return;
}
if (x>m) r->upd(x,v);
else l->upd(x,v);
val=min(l->val,r->val);
}
ll query(ll x, ll y){
if (x<=s && e<=y) return val;
if (x>m) return r->query(x,y);
if (y<=m) return l->query(x,y);
return min(l->query(x,y),r->query(x,y));
}
}*small, *big;
vector<iiii> bridges;
bool cmp(iiii a, iiii b){
if (get<2>(a)==get<2>(b)) return get<3>(a)<get<3>(b);
return get<2>(a)<get<2>(b);
}
long long min_distance(std::vector<int> x, std::vector<int> h, std::vector<int> l, std::vector<int> r, std::vector<int> y, int s, int g) {
ll n=x.size(),m=l.size();
assert(s==0 && g==n-1);
small=new node(1,n);
big=new node(1,n);
for (int i=0;i<m;i++) bridges.emplace_back(l[i],r[i],y[i],i);
sort(bridges.begin(),bridges.end(),cmp); //sorted by height
vector<iiii> queries; //time, where to toggle, original height, off/on
for (int i=0;i<m;i++){
ll a,b,c,d;
tie(a,b,c,d)=bridges[i];
queries.emplace_back(a,i+1,c,1);
queries.emplace_back(b,i+1,c,0);
}
queries.emplace_back(1,0,0,0);
sort(queries.begin(),queries.end());
ll ptr=0;
small=new node(0,m+5),big=new node(0,m+5);
small->upd(0,0);
for (int i=0;i<n-1;i++){
while (ptr!=queries.size() && get<0>(queries[ptr])<=i){
ll a,b,c,d;
tie(a,b,c,d)=queries[ptr];
if (d==1){
ll lo=small->query(0,b-1)+c;
ll hi=big->query(b+1,m+5)-c;
ll res=min(lo,hi);
small->upd(b,res-c); //get dominated
big->upd(b,res+c); //dominated
} else{
small->upd(b,inf);
big->upd(b,inf); //reset to sentinels
}
ptr++;
}
}
ll ans=big->query(0,m+5); //0 is under everything
return ans+x.back()-x.front();
}
Compilation message
walk.cpp: In function 'long long int min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:56:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::tuple<long long int, long long int, long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
56 | while (ptr!=queries.size() && get<0>(queries[ptr])<=i){
| ~~~^~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
348 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
348 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
77 ms |
21580 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
77 ms |
21580 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
348 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
