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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 |
---|---|---|---|---|---|---|---|---|---|
#448176 | #8525. Mercenaries | marher | WA | 419ms | 96852kb | C++14 | 3.8kb | 2024-06-19 13:17:10 | 2024-06-19 13:17:10 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=8e5+50;
struct poi
{
int x,y;
friend poi operator+(poi a,poi b)
{
return (poi){a.x+b.x,a.y+b.y};
}
friend poi operator-(poi a,poi b)
{
return (poi){a.x-b.x,a.y-b.y};
}
int operator^(poi b)
{
return x*b.y-y*b.x;
}
friend bool operator<(poi a,poi b)
{
int w=a^b;
return w==0?a.x>b.x:w<0;
}
int operator*(poi b)
{
return x*b.x+y*b.y;
}
}a[N];
struct query
{
poi x;int c,id,p;
friend bool operator<(query a,query b)
{
return a.x<b.x;
}
}Q[N];
int n,q,ans[N];
vector<poi>p[N];
poi st[N];
#define ls (x<<1)
#define rs (x<<1|1)
#define mid ((l+r)>>1)
#define LS ls,l,mid
#define RS rs,mid+1,r
struct convex
{
vector<poi>p;
int pos;
void merge1(convex a,convex b)// mink
{
vector<poi>().swap(p);
p.resize(a.p.size()+b.p.size());
int pos=0,cc=0;
for(auto x:a.p)
{
while(pos<b.p.size()&&b.p[pos]<x)p[cc++]=b.p[pos++];
p[cc++]=x;
}
while(pos<b.p.size())p[cc++]=b.p[pos++];
}
void merge2(convex a,convex b)// convex hull
{
vector<poi>().swap(p);
int cc=0,pos=0;
for(auto x:a.p)
{
while(pos<b.p.size()&&(x.x>b.p[pos].x||(x.x==b.p[pos].x&&x.y>b.p[pos].y)))st[cc++]=b.p[pos++];
st[cc++]=x;
}
while(pos<b.p.size())st[cc++]=b.p[pos++];
if(cc==0)return;
int top=0;
for(int i=1;i<cc;i++)
{
while(top&&(st[i]-st[top-1])<(st[top]-st[top-1]))top--;
st[++top]=st[i];
}
p.resize(top+1);
for(int i=0;i<=top;i++)p[i]=st[i];
}
void diff()
{
for(int i=p.size()-1;i>0;i--)p[i]=p[i]-p[i-1];
}
void integral()
{
for(int i=1;i<p.size();i++)p[i]=p[i]+p[i-1];
}
int find(poi x)
{
if(p.empty())return 0;
int w=x*p[pos];
while(pos+1<p.size()&&w<=x*p[pos+1])w=x*p[++pos];
return w;
}
}f[N],g[N],tmp;
void build(int x,int l,int r)
{
if(l==r)
{
sort(p[l].begin(),p[l].end());
f[x].merge2((convex){p[l]},(convex){});
f[x].diff();
g[x].merge1((convex){{a[l]}},f[x]);
g[x].integral();
return;
}
build(LS);build(RS);
f[x].merge1(f[ls],f[rs]);
tmp=g[ls];tmp.diff();
tmp.merge1(tmp,f[rs]);
tmp.integral();
g[x].merge2(tmp,g[rs]);
}
int c;poi t;
int solve(int x,int l,int r,int L,int R)
{
if(L>R)return -1;
if(L<=l&&R>=r)
{
if(g[x].find(t)<c)
{
c-=f[x].find(t);
return -1;
}
if(l==r)return l;
int w=solve(RS,L,R);
return w==-1?solve(LS,L,R):w;
}
if(R>mid)
{
int w=solve(RS,L,R);
if(w!=-1)return w;
}
return solve(LS,L,R);
}
void dfs(int x,int l,int r)
{
f[x].integral();
if(l==r)return;
dfs(LS);dfs(RS);
}
main()
{
// freopen("in.txt","r",stdin);
// freopen("out.txt","w",stdout);
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i].x>>a[i].y;
if(i==n)break;
int k;cin>>k;
p[i].resize(k);
while(k--)cin>>p[i][k].x>>p[i][k].y;
}
build(1,1,n);dfs(1,1,n);
cin>>q;
for(int i=1;i<=q;i++)cin>>Q[i].p>>Q[i].x.x>>Q[i].x.y>>Q[i].c,Q[i].id=i;
sort(Q+1,Q+1+q);
for(int i=1;i<=q;i++)
{
t=Q[i].x,c=Q[i].c;
int pos=Q[i].p;
if(a[pos]*t>=c)ans[Q[i].id]=pos;
else ans[Q[i].id]=solve(1,1,n,1,Q[i].p-1);
}
for(int i=1;i<=q;i++)cout<<ans[i]<<'\n';
}
详细
Test #1:
score: 100
Accepted
time: 12ms
memory: 72496kb
input:
3 1 1 2 1 2 1 2 3 2 5 1 5 4 3 3 4 5 1 1 2 4 5 12 1 1 1 1 2 1 1 1 3 1 1 1 3 1 1 9 3 2 2 20 3 1 2 18 3 1 2 19 3 1 2 20 3 0 1 8 2 1 0 4 2 1 0 3 2 1 0 2
output:
1 2 3 3 2 2 1 -1 1 -1 2 2
result:
ok 12 numbers
Test #2:
score: 0
Accepted
time: 8ms
memory: 72288kb
input:
2 47 11 1 98 25 9 90 10 1 32 28 1811 2 17 44 4114 1 36 88 2661 2 79 33 3681 1 53 26 2778 2 59 20 2332 2 63 45 4616 2 72 11 10835 1 13 28 919 2 16 59 4445
output:
1 -1 -1 2 -1 1 2 1 1 2
result:
ok 10 numbers
Test #3:
score: 0
Accepted
time: 7ms
memory: 72592kb
input:
3 87 42 5 69 12 82 79 10 88 45 51 40 3 18 6 5 73 100 58 41 40 88 54 5 40 98 31 63 100 3 32 13 1811 1 51 21 5318 1 32 5 2994 2 77 51 19184 2 78 60 1763 1 10 1 913 1 22 51 4057 1 2 5 385 2 50 15 989 2 65 53 1488 1 49 82 7708 2 33 90 1133 1 23 33 3388 1 92 36 9516 3 39 61 10014 2 43 55 1103 2 48 38 127...
output:
3 1 1 1 2 -1 -1 -1 2 2 -1 2 -1 1 2 2 -1 3 2 2 3 1 1 1 -1 1 1 1 3 1 -1 1 -1 1 2 1 2 1 1 1 1 1 -1 1 -1 -1 1 1 -1 -1 1 1 2 1 1 -1 2 -1 1 1 1 1 3 1 2 3 2 2 1 1 -1 1 1 3 1 1 1 3 2 1 1 2 1 2 1 2 1 -1 -1 -1 1 2 1 1 -1 -1 1 3 2 2
result:
ok 100 numbers
Test #4:
score: -100
Wrong Answer
time: 419ms
memory: 96852kb
input:
2 309248041 338995438 500000 1235 4866 1931 3652 1921 258 545 587 3001 542 3074 1694 4944 206 3217 3135 2388 4791 1890 3281 3840 4614 4491 1339 4660 1708 2225 3199 736 1306 4175 4652 906 3509 2571 1578 50 981 402 4975 2730 2198 4546 3120 40 815 2492 518 2102 2651 1018 3996 1764 808 3934 4312 1981 40...
output:
2 1 -1 2 2 2 1 1 2 -1 2 2 1 1 2 1 2 2 1 2 2 1 -1 -1 1 -1 2 -1 1 2 1 1 1 1 -1 1 -1 -1 -1 1 2 2 1 1 1 2 -1 -1 1 -1 1 2 -1 1 2 1 2 2 -1 2 1 2 2 -1 2 2 -1 2 1 2 1 -1 -1 1 1 -1 2 1 2 2 1 1 1 1 2 2 -1 -1 1 2 2 -1 2 -1 -1 -1 1 2 1 1 2 2 1 -1 -1 2 2 2 1 -1 1 2 2 -1 1 -1 -1 -1 1 2 1 2 1 -1 -1 1 2 2 -1 2 2 2 ...
result:
wrong answer 313th numbers differ - expected: '1', found: '-1'