#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define mp make_pair
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
ll readint(){
ll x=0,f=1; char ch=getchar();
while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
return x*f;
}
int n,s[500005],q[500005],ord[500005];
ll W,num[80005][2];
struct frac{
ll p,q;
bool operator< (const frac f){
return p*f.q<f.p*q;
}
};
bool cmp(int i,int j){ return s[i]*q[j]<s[j]*q[i]; }
void build(int id,int l,int r){
num[id][0]=0;
num[id][1]=0;
if(l==r) return;
int mid=(l+r)/2;
build(id<<1,l,mid);
build(id<<1|1,mid+1,r);
}
void update(int id,int l,int r,int p){
if(l==r) return (void)(num[id][0]+=p,num[id][1]+=1);
int mid=(l+r)/2;
if(p<=mid) update(id<<1,l,mid,p);
else update(id<<1|1,mid+1,r,p);
num[id][0]=num[id<<1][0]+num[id<<1|1][0];
num[id][1]=num[id<<1][1]+num[id<<1|1][1];
}
int walk(int id,int l,int r,ll x){
if(l==r) return num[id][0]>=x?l:-1;
int mid=(l+r)/2;
if(num[id<<1][0]>=x) return walk(id<<1,l,mid,x);
else return walk(id<<1|1,mid+1,r,x-num[id<<1][0]);
}
ll get(int id,int l,int r,int ql,int qr,int t){
if(ql<=l&&r<=qr) return num[id][t];
int mid=(l+r)/2;
if(qr<=mid) return get(id<<1,l,mid,ql,qr,t);
else if(ql>mid) return get(id<<1|1,mid+1,r,ql,qr,t);
else return get(id<<1,l,mid,ql,qr,t)+get(id<<1|1,mid+1,r,ql,qr,t);
}
pair<int,ll> query(ll v,ll c){
v/=c;
int p=walk(1,1,20000,v);
if(p==-1) return mp(num[1][1],num[1][0]);
if(p==1) return mp(v/c,v/c);
return mp(get(1,1,20000,1,p-1,1)+(v-get(1,1,20000,1,p-1,0))/p,get(1,1,20000,1,p-1,0)+((v-get(1,1,20000,1,p-1,0))/p)*p);
}
int main(){
n=readint(); W=readint();
for(int i=1;i<=n;i++) s[i]=readint(),q[i]=readint();
for(int i=1;i<=n;i++) ord[i]=i;
sort(ord+1,ord+n+1,cmp);
build(1,1,20000);
int pos=-1;
int cnt=0;
frac ans;
for(int _i=1;_i<=n;_i++){
int i=ord[_i];
if(s[i]>W){ update(1,1,20000,q[i]); continue; }
auto qv=query((W-s[i])*q[i],s[i]);
qv.fi+=1;
if(qv.fi>cnt){
cnt=qv.fi;
pos=i;
ans.p=s[i]*(qv.se+q[i]);
ans.q=q[i];
}else if(qv.fi==cnt){
frac f;
f.p=s[i]*(qv.se+q[i]);
f.q=q[i];
if(f<ans){
ans=f;
pos=i;
}
}
update(1,1,20000,q[i]);
}
if(cnt==0){
printf("0");
return 0;
}
vector<pii> vec;
vector<int> res;
for(int _i=1;_i<=n;_i++){
int i=ord[_i];
if(i==pos){
res.pb(i);
sort(vec.begin(),vec.end());
W-=s[i];
W*=q[i];
W/=s[i];
for(auto&p:vec) if(W>=p.fi) W-=p.fi,res.pb(p.se);
break;
}
vec.pb(mp(q[i],i));
}
sort(res.begin(),res.end());
printf("%d\n",res.size());
for(int i=0;i<(int)res.size();i++) printf("%d\n",res[i]);
return 0;
}
Compilation message
hiring.cpp: In function 'int main()':
hiring.cpp:123:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
123 | printf("%d\n",res.size());
| ~^ ~~~~~~~~~~
| | |
| int std::vector<int>::size_type {aka long unsigned int}
| %ld
hiring.cpp:26:19: warning: 'ans.frac::p' may be used uninitialized in this function [-Wmaybe-uninitialized]
26 | return p*f.q<f.p*q;
| ~~~^~
hiring.cpp:81:7: note: 'ans.frac::p' was declared here
81 | frac ans;
| ^~~
hiring.cpp:26:11: warning: 'ans.frac::q' may be used uninitialized in this function [-Wmaybe-uninitialized]
26 | return p*f.q<f.p*q;
| ~^~~~
hiring.cpp:81:7: note: 'ans.frac::q' was declared here
81 | frac ans;
| ^~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
Output is correct |
2 |
Correct |
1 ms |
6744 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
1 ms |
6748 KB |
Output is correct |
5 |
Correct |
1 ms |
6744 KB |
Output is correct |
6 |
Correct |
2 ms |
6748 KB |
Output is correct |
7 |
Correct |
2 ms |
6748 KB |
Output is correct |
8 |
Correct |
2 ms |
6748 KB |
Output is correct |
9 |
Correct |
3 ms |
6748 KB |
Output is correct |
10 |
Correct |
3 ms |
6748 KB |
Output is correct |
11 |
Correct |
4 ms |
6748 KB |
Output is correct |
12 |
Correct |
4 ms |
6744 KB |
Output is correct |
13 |
Correct |
5 ms |
6772 KB |
Output is correct |
14 |
Correct |
7 ms |
7004 KB |
Output is correct |
15 |
Correct |
7 ms |
6748 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
6748 KB |
Output is correct |
2 |
Correct |
1 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
4 |
Correct |
10 ms |
6900 KB |
Output is correct |
5 |
Correct |
18 ms |
7004 KB |
Output is correct |
6 |
Correct |
149 ms |
10336 KB |
Output is correct |
7 |
Correct |
178 ms |
13240 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
Output is correct |
2 |
Correct |
1 ms |
6776 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
6744 KB |
Output is correct |
2 |
Correct |
2 ms |
6748 KB |
Output is correct |
3 |
Correct |
1 ms |
6748 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
6748 KB |
Output is correct |
2 |
Correct |
1 ms |
6748 KB |
Output is correct |
3 |
Correct |
2 ms |
6948 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
60 ms |
7904 KB |
Output is correct |
2 |
Correct |
55 ms |
7904 KB |
Output is correct |
3 |
Correct |
56 ms |
8388 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
90 ms |
9176 KB |
Output is correct |
2 |
Correct |
87 ms |
9240 KB |
Output is correct |
3 |
Correct |
87 ms |
9156 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
231 ms |
14012 KB |
Output is correct |
2 |
Correct |
207 ms |
13940 KB |
Output is correct |
3 |
Correct |
211 ms |
14116 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
257 ms |
14144 KB |
Output is correct |
2 |
Correct |
243 ms |
14264 KB |
Output is correct |
3 |
Correct |
251 ms |
13780 KB |
Output is correct |