# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1058467 | user736482 | Bikeparking (EGOI24_bikeparking) | C++17 | 29 ms | 11288 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
long long a,b,c,t,n,x,y,m,q;
vector<long long>v1,v2;
stack<long long>s;
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cin>>n;
long long res=0;
for(long long i=0;i<n;i++){
cin>>a;
v1.push_back(a);
}
for(long long i=0;i<n;i++){
cin>>a;
v2.push_back(a);
}
long long pt1=n-1,pt2=n-1;
pt2=n-1;
while(pt2>=0){
res-=v2[pt2];
pt2--;
}
if(a)
s.push(a);
v2[n-1]=0;
//cout<<res;
//return 0;
pt2=n-1;
while(pt1>=0){
//cout<<pt1<<" "<<pt2<<" ";
if(pt1>=pt2 || v1[pt1]==0){
pt1--;
continue;
}
while(pt2-1>pt1){
pt2--;
if(v2[pt2])
s.push(v2[pt2]);
v2[pt2]=0;
}
if(s.empty()){
pt2--;
if(v2[pt2])
s.push(v2[pt2]);
res+=min(v1[pt2],v2[pt2]);
continue;}
v2[pt2]=s.top();
s.pop();
if(v2[pt2]>=v1[pt1]){
v2[pt2]-=v1[pt1];
res+=2*v1[pt1];
v1[pt1]=0;
}
else{
v1[pt1]-=v2[pt2];
res+=2*v2[pt2];
v2[pt2]=0;
}
if(v2[pt2])
s.push(v2[pt2]);
v2[pt2]=0;
}
//return 0;
//v2[pt2]-=min(v2[pt2],v1[pt2]);
//cout<<res;
cout<<res;
return 0;
}
Compilation message (stderr)
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