#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define pii pair<int,int>
using namespace __gnu_pbds;
using namespace std;
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define f first
#define int long long
#define s second
#define pii pair<int,int>
template<class T>bool umax(T &a,T b){if(a<b){a=b;return true;}return false;}
template<class T>bool umin(T &a,T b){if(b<a){a=b;return true;}return false;}
typedef tree<int, null_type, less_equal<int>, rb_tree_tag,
tree_order_statistics_node_update> ordered_set;
const int N=1e6 + 5 ;
const int inf = 1e18 + 7;
const int mod = 998244353;
pii t[N*4];
vector<int> h(N),w(N);
int sum = 0;
int f(int a, int b, int c){
return a*b+c;
}
void build(int tl, int tr, int v){
t[v] = {1e9,inf};
if(tl == tr)return;
int tm = (tl + tr)/2;
build(tl,tm,v*2);
build(tm+1,tr,v*2+1);
}
void add(int tl, int tr, int v, int a, int b){
if(tl == tr){
if(f(t[v].f,tl,t[v].s) > f(a,tl,b)){
t[v] = {a,b};
}
return;
}
int tm = (tl + tr)/2;
if(tm < t[v].f){
swap(a,t[v].f);
swap(b,t[v].s);
}
if(f(a,tm,b) >= f(t[v].f,tm,t[v].s))
add(tl,tm,v*2,a,b);
else{
add(tm+1,tr,v*2+1,t[v].f,t[v].s);
t[v] = {a,b};
}
}
int get(int tl, int tr, int v, int x){
if(tl == tr)return f(t[v].f,x,t[v].s);
int tm = (tl + tr)/2;
if(x <= tm)return min(f(t[v].f,x,t[v].s),get(tl,tm,v*2,x));
else return min(f(t[v].f,x,t[v].s),get(tm+1,tr,v*2+1,x));
}
void solve(){
int n,m,k;
cin >> n;
for(int i = 1;i<=n;i++){
cin>>h[i];
}
for(int i = 1;i<=n;i++){
cin>>w[i];
sum += w[i];
}
build(1,N,1);
add(1,1e6,1,-2*h[1],-w[1]+h[1]*h[1]);
vector<int>dp(n+1);
for(int i = 2;i<=n;i++){
dp[i] = get(1,N,1,h[i]) + h[i]*h[i] - w[i];
add(1,N,1,-2*h[i],dp[i]+h[i]*h[i]);
}
cout<<dp[n]<<'\n';
}
/*
6
3 8 7 1 6 6
0 -1 9 1 2 0
*/
signed main()
{
// freopen("seq.in", "r", stdin);
// freopen("seq.out", "w", stdout);
ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
int tt=1;//cin>>tt>>n;
while(tt--)solve();
}
Compilation message
building.cpp: In function 'void solve()':
building.cpp:74:8: warning: unused variable 'm' [-Wunused-variable]
74 | int n,m,k;
| ^
building.cpp:74:10: warning: unused variable 'k' [-Wunused-variable]
74 | int n,m,k;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
48988 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
36 ms |
50780 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
14 ms |
48988 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
