#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define ll long long
const int N=3e5+5;
int par[N];
int sbtr[N];
int H;
int mn[N],mx[N];
int find(int x){
if(par[x]==x)return x;
return par[x]=find(par[x]);
}
void unite(int x, int y){
int px=find(x),py=find(y);
if(px==py)return;
if(sbtr[py]>sbtr[px])swap(px,py);
if(sbtr[py]%2 and sbtr[px]%2){
H-=mx[py];
H-=mx[px];
}
else if(sbtr[py]%2){
H+=mn[py];
H-=max(mx[py],mx[px]);
}
else if(sbtr[px]%2){
H+=mn[px];
H-=max(mx[py],mx[px]);
}
mx[py]=max(mx[py],mx[px]);
mn[py]=min(mn[py],mn[px]);
sbtr[px]+=sbtr[py];
par[py]=px;
}
std::vector<long long> calculate_costs(std::vector<int> W, std::vector<int> A,
std::vector<int> B, std::vector<int> E) {
H=0;
for(auto p:A)H+=p;
int q = (int)E.size();
int n = W.size();
for(int i=0;i<n;i++){
par[i]=i;
sbtr[i]=1;
mn[i]=A[i]-B[i];
mx[i]=A[i]-B[i];
}
vector<ll>ans(q);
vector<pair<ll,ll> >v;
vector<pair<ll, pair<int,int> > >vc;
for(int i=0;i<n;i++){
v.pb({W[i],i});
}
sort(v.begin(),v.end());
for(int i=1;i<n;i++){
int x=abs(v[i].ff-v[i-1].ff);
int a=v[i-1].ss,b=v[i].ss;
vc.pb({x,{a,b}});
}
sort(vc.begin(),vc.end());
int idx=0;
vector<pair<int,int>>vec;
for(int i=0;i<q;i++){
vec.pb({E[i],i});
}
sort(vec.begin(),vec.end());
for(int f=0;f<q;f++){
ll d=vec[f].ff;
int k=vec[f].ss;
while(vc[idx].ff<=d and idx<vc.size()){
int a=vc[idx].ss.ff,b=vc[idx].ss.ss;
unite(a,b);
idx++;
}
ans[k]=H;
}
return ans;
}
int main() {
int N=5;
std::vector<int> W={15, 12, 2, 10, 21}, A={5, 4, 5, 6, 3}, B={1, 2, 2, 3, 2};
int Q=3;
std::vector<int> E={5,9,1};
std::vector<long long> R = calculate_costs(W, A, B, E);
int S = (int)R.size();
for (int j = 0; j < S; j++)
printf("%lld\n", R[j]);
fclose(stdout);
return 0;
}
Compilation message
nile.cpp: In function 'std::vector<long long int> calculate_costs(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
nile.cpp:77:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
77 | while(vc[idx].ff<=d and idx<vc.size()){
| ~~~^~~~~~~~~~
nile.cpp: In function 'int main()':
nile.cpp:87:7: warning: unused variable 'N' [-Wunused-variable]
87 | int N=5;
| ^
nile.cpp:89:7: warning: unused variable 'Q' [-Wunused-variable]
89 | int Q=3;
| ^
/usr/bin/ld: /tmp/ccAovEjL.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cctH8YJK.o:nile.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
