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<iostream>
#include<cstdlib>
#include<cstdio>
#include<queue>
#define f first
#define s second
using namespace std;
struct ulamek{
long long a,b;
};
bool operator== (ulamek a,ulamek b){
return a.a*b.b==a.b*b.a;
}
bool operator< (ulamek a,ulamek b){
return a.a*b.b<b.a*a.b;
}
ulamek mul(int a,int b){
ulamek c;
c.a=a,c.b=b;
return c;
}
priority_queue <pair<ulamek,pair<int,int>>> s;
//using namespace std;
long long tab[2][100005];
int kol[2][100005],przed[2][100005];
int h,w;
long long wyn;
bool us[2][100005];
int main(){
ios_base::sync_with_stdio(0);
cin>>h>>w;
for(int i=0;i<h;i++) cin>>tab[0][i];
for(int i=0;i<w;i++) cin>>tab[1][i];
przed[0][0]=-1;
kol[0][h-1]=-1;
for(int i=1;i<h;i++){
kol[0][i-1]=i;
przed[0][i]=i-1;
s.push({mul(tab[0][i]-tab[0][i-1],1),{i-1,i}});
}
przed[1][0]=-1;
kol[1][w-1]=-1;
for(int i=1;i<w;i++){
kol[1][i-1]=i;
przed[1][i]=i-1;
s.push({mul(tab[1][i]-tab[1][i-1],1),{1-i,-i}});
}
int h2=h,w2=w;
while(!s.empty()){
auto i=s.top();
s.pop();
int pom=0;
if(i.s.f<0 || i.s.s<0) i.s.f=-i.s.f,i.s.s=-i.s.s,pom=1;
if(us[pom][i.s.f] || us[pom][i.s.s]) continue;
int a=przed[pom][i.s.s],b=kol[pom][i.s.s];
if(a!=-1) kol[pom][a]=b;
if(b!=-1) przed[pom][b]=a;
us[pom][i.s.s]=1;
if(a!=-1 && b!=-1)
s.push({mul(tab[pom][b]-tab[pom][a],b-a),{(1-2*pom)*a,(1-2*pom)*b}});
if(pom==0){
if(h-1==i.s.s){
h=i.s.f+1;
wyn+=tab[1][w-1]*(i.s.s-i.s.f);
}
}else{
if(w-1==i.s.s){
w=i.s.f+1;
wyn+=tab[0][h-1]*(i.s.s-i.s.f);
}
}
if(h==1 && w==1) break;
/*
cerr<<pom<<" "<<i.s.s<<"\n";
//pair<ulamek,int> i=* s.rbegin();
for(int i=0;i<h2;i++) cerr<<us[0][i];
cerr<<"\n";
for(int i=0;i<w2;i++) cerr<<us[1][i];
cerr<<"\n\n";
// */
}
//cerr<<h<<" "<<w<<"\n";
cout<<wyn<<"\n";
return 0;
}
Compilation message (stderr)
kyoto.cpp: In function 'int main()':
kyoto.cpp:48:7: warning: unused variable 'h2' [-Wunused-variable]
48 | int h2=h,w2=w;
| ^~
kyoto.cpp:48:12: warning: unused variable 'w2' [-Wunused-variable]
48 | int h2=h,w2=w;
| ^~
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