QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#559948 | #4636. Optimal Assortment | World_Creater | WA | 208ms | 42636kb | C++17 | 2.0kb | 2024-09-12 10:51:28 | 2024-09-12 10:51:28 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int inf=1e6+5;
int n,q,a[500005],l[500005],r[500005];
typedef long long ll;
struct segtree{
struct node{
ll cnt,sum;
node operator +(const node &b) const
{
return {cnt+b.cnt,sum+b.sum};
}
}tree[4000005];
#define lc(x) (x<<1)
#define rc(x) (x<<1|1)
#define M(l,r) ((l+r)>>1)
void modify(int p,int l,int r,int x,int y)
{
tree[p].cnt+=y;
tree[p].sum+=1ll*x*y;
if(l==r) return ;
int mid=M(l,r);
if(x<=mid) modify(lc(p),l,mid,x,y);
else modify(rc(p),mid+1,r,x,y);
}
node query(int p,int l,int r,int L,int R)
{
// cerr<<l<<" "<<r<<" "<<L<<" "<<R<<"\n";
if(L<=l&&r<=R) return tree[p];
int mid=M(l,r);
if(L<=mid&&mid<R) return query(lc(p),l,mid,L,R)+query(rc(p),mid+1,r,L,R);
if(L<=mid) return query(lc(p),l,mid,L,R);
if(mid<R) return query(rc(p),mid+1,r,L,R);
}
int solve(int p,int l,int r)
{
if(l==r) return l;
int mid=M(l,r);
// cerr<<tree[rc(p)].sum<<" "<<(tree[rc(p)].cnt+::r[0])*(mid+1)<<"\n";
if(tree[rc(p)].sum<=(tree[rc(p)].cnt+::r[0])*(mid+1)) return solve(lc(p),l,mid);
else return solve(rc(p),mid+1,r);
}
}T;
void solve()
{
int p=T.solve(1,0,inf);
auto ans=T.query(1,0,inf,p+1,inf);
ans.cnt+=r[0];
if(ans.sum==0) cout<<"0/1\n";
else
{
ll g=__gcd(ans.sum,ans.cnt);
ans.sum/=g;
ans.cnt/=g;
cout<<ans.sum<<"/"<<ans.cnt<<"\n";
}
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
cin>>n>>q;
for(int i=1;i<=n;i++)
{
cin>>a[i];
}
for(int i=0;i<=n;i++)
{
cin>>l[i];
if(i!=0) T.modify(1,0,inf,a[i],l[i]);
}
for(int i=0;i<=n;i++)
{
cin>>r[i];
}
solve();
while(q--)
{
int opt;
cin>>opt;
if(opt==1)
{
int x,y,z;
cin>>x>>y>>z;
if(x!=0) T.modify(1,0,inf,a[x],-l[x]);
l[x]=y;
r[x]=z;
if(x!=0) T.modify(1,0,inf,a[x],l[x]);
}
if(opt==2)
{
int x,y;
cin>>x>>y;
T.modify(1,0,inf,a[x],-l[x]);
a[x]=y;
T.modify(1,0,inf,a[x],l[x]);
}
solve();
}
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 9820kb
input:
2 5 4 2 4 3 2 4 3 2 2 1 2 1 1 2 3 1 0 0 0 1 1 0 0 1 2 0 0
output:
16/9 10/9 1/1 2/1 2/1 0/1
result:
ok 6 lines
Test #2:
score: -100
Wrong Answer
time: 208ms
memory: 42636kb
input:
200000 200000 959139 199252 470888 74578 802746 396295 386884 721198 628655 722503 207868 647942 87506 792718 761498 917727 843338 908043 952768 268783 375312 414369 319712 96230 277106 168102 263554 936674 246545 667941 198849 268921 191459 436316 134606 802932 515506 837311 465964 394766 17626 650...
output:
509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 509813598430217/512575453 50981359843021...
result:
wrong answer 1st lines differ - expected: '311567211361053/313072603', found: '509813598430217/512575453'