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 |
---|---|---|---|---|---|---|---|---|---|
#63714 | #4236. Triangular Logs | DaBenZhongXiaSongKuaiDi# | WA | 2ms | 40172kb | C++14 | 3.4kb | 2022-11-23 10:32:21 | 2022-11-23 10:32:22 |
Judging History
answer
#include <bits/stdc++.h>
//#define int long long
#define ll long long
#define db double
#define fi first
#define se second
#define pii pair<int,int>
#define vi vector<int>
#define y1 heqiyouxing
using namespace std;
const int maxn=3e5,LOG=100,inf=1e9;
int n,q,kx[maxn+5],ky[maxn+5],cntx,cnty,ans[maxn+5];
struct node {
int x,y,h,id;
node() {
x=y=h=id=0;
}
node(int a,int b,int c,int d) {
x=a,y=b,h=c,id=d;
}
bool operator < (const node &t) const {
return x==t.x?id<t.id:x<t.x;
}
} a[maxn+5];
struct mat {
int x1,y1,x2,y2,id;
} M[maxn+5];
vector<node> addx[maxn+5];
set<node> S[maxn+5];
vector<mat> R[maxn+5];
int mx[maxn*4+5];
void upd(int p) {
mx[p]=max(mx[p+p],mx[p+p+1]);
}
void build(int p,int l,int r) {
if (l==r) {
mx[p]=-inf;
return ;
}
int mid=(l+r)>>1;
build(p+p,l,mid);
build(p+p+1,mid+1,r);
}
void modify(int p,int l,int r,int pos,int d) {
if (l==r) {
mx[p]=d; return ;
}
int mid=(l+r)>>1;
if (pos<=mid) modify(p+p,l,mid,pos,d);
else modify(p+p+1,mid+1,r,pos,d);
upd(p);
}
int query(int p,int l,int r,int pos,int d) {
// >pos ��һ�� >=d
if (pos>r) return -1;
if (l==r) {
if (mx[p]<d) return -1;
return l;
}
if (mx[p]<d) return -1;
int mid=(l+r)>>1;
if (pos>mid) return query(p+p+1,mid+1,r,pos,d);
else {
int ret=query(p+p,l,mid,pos,d);
if (ret==-1) return query(p+p+1,mid+1,r,pos,d);
}
}
int main() {
scanf("%d %d",&n,&q);
for (int i=1;i<=n;i++) {
scanf("%d %d %d",&a[i].x,&a[i].y,&a[i].h);
kx[++cntx]=a[i].x,ky[++cnty]=a[i].y; a[i].id=i;
}
for (int i=1;i<=q;i++) {
scanf("%d %d %d %d",&M[i].x1,&M[i].y1,&M[i].x2,&M[i].y2);
kx[++cntx]=M[i].x1,kx[++cntx]=M[i].x2;
ky[++cnty]=M[i].y1,ky[++cnty]=M[i].y2;
M[i].id=i;
}
sort(kx+1,kx+cntx+1); cntx=unique(kx+1,kx+cntx+1)-kx-1;
sort(ky+1,ky+cnty+1); cnty=unique(ky+1,ky+cnty+1)-ky-1;
for (int i=1;i<=n;i++) {
a[i].x=lower_bound(kx+1,kx+cntx+1,a[i].x)-kx;
a[i].y=lower_bound(ky+1,ky+cnty+1,a[i].y)-ky;
addx[a[i].x].push_back(a[i]);
S[a[i].y].insert(a[i]);
}
for (int i=1;i<=q;i++) {
M[i].x1=lower_bound(kx+1,kx+cntx+1,M[i].x1)-kx;
M[i].x2=lower_bound(kx+1,kx+cntx+1,M[i].x2)-kx;
M[i].y1=lower_bound(ky+1,ky+cnty+1,M[i].y1)-ky;
M[i].y2=lower_bound(ky+1,ky+cnty+1,M[i].y2)-ky;
R[M[i].x2].push_back(M[i]);
}
build(1,1,cnty);
for (int i=1;i<=cntx;i++) {
for (auto t:addx[i]) {
int y=t.y;
modify(1,1,cnty,y,t.x);
}
for (auto Q:R[i]) {
int id=Q.id;
int x1=Q.x1,y1=Q.y1,x2=Q.x2,y2=Q.y2;
int lsty=y1-1;
int num=0,flag=0;
static vector<int> v; v.clear();
while (1) {
int nwy=query(1,1,cnty,lsty+1,x1);
if (nwy>y2 || nwy==-1) break ;
set<node>::iterator it=S[nwy].lower_bound(node(x1,0,0,0));
for (;it!=S[nwy].end();it++) {
node t=*it;
if (t.x>x2) break ;
num++;
if (num>=LOG) {
flag=1; break ;
}
v.push_back(t.h);
}
if (flag) break ;
lsty=nwy;
// cerr<<nwy<<'\n';
}
sort(v.begin(),v.end());
// cout<<Q.id<<' '<<v.size()<<'\n';
if (v.size()>=3) {
for (int i=0;i<v.size()-2;i++) {
if (v[i]+v[i+1]>v[i+2]) {
flag=1; break ;
}
}
}
ans[Q.id]=flag;
}
}
for (int i=1;i<=q;i++) {
cout<<ans[i]<<'\n';
}
return 0;
}
/*
9 5
1 3 3
2 3 1
3 3 4
1 2 1
2 2 5
3 2 9
1 1 2
2 1 6
3 1 5
1 1 1 2
1 1 2 2
1 1 1 3
1 2 3 2
1 1 3 3
*/
詳細信息
Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 40172kb
input:
9 5 1 3 3 2 3 1 3 3 4 1 2 1 2 2 5 3 2 9 1 1 2 2 1 6 3 1 5 1 1 1 2 1 1 2 2 1 1 1 3 1 2 3 2 1 1 3 3
output:
0 0 0 0 0
result:
wrong answer 2nd lines differ - expected: '1', found: '0'