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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#109021 | #4236. Triangular Logs | swapnilg | RE | 9ms | 40964kb | C++14 | 6.2kb | 2023-05-27 09:38:46 | 2023-05-27 09:38:50 |
Judging History
answer
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
#define pb push_back
int x[100000];
int y[100000];
int h[100000];
vector<int> xcoords;
vector<int> ycoords;
vector<int> segtree_ycoords[400000];
vector<int> segtree[400000];
vector<vector<pair<int, int> > > firsth[400000];
vector<int> numpoints[400000];
int n, q;
void build_ysegtree_h(int rt, int yrt, int yl, int yr)
{
if (yl==yr) return;
//cout << "build_ysegtree_h here " << rt << " " << yrt << " " << yl << " " << yr << endl;
int mid=(yl+yr)/2;
int midpos=segtree_ycoords[rt][mid];
for (int i=0; i<firsth[rt][yrt].size(); i++)
{
if (firsth[rt][yrt][i].first<=segtree_ycoords[rt][mid])
{
numpoints[rt][2*yrt]++;
//if (firsth[rt][2*yrt].size()<44)
firsth[rt][2*yrt].pb(firsth[rt][yrt][i]);
}
else{
numpoints[rt][2*yrt+1]++;
//if (firsth[rt][2*yrt+1].size()<44)
firsth[rt][2*yrt+1].pb(firsth[rt][yrt][i]);
}
}
build_ysegtree_h(rt, 2*yrt, yl, (yl+yr)/2);
build_ysegtree_h(rt, 2*yrt+1, (yl+yr)/2+1, yr);
}
void build_ycoords(int l, int r, int rt)
{
//cout << l << r << rt << endl;
for (int i=0; i<n; i++)
{
int pos=int(lower_bound(xcoords.begin(), xcoords.end(), x[i])-xcoords.begin());
if (pos>=l && pos<=r)
{
segtree_ycoords[rt].pb(y[i]);
}
}
sort(segtree_ycoords[rt].begin(), segtree_ycoords[rt].end());
segtree_ycoords[rt].resize(unique(segtree_ycoords[rt].begin(), segtree_ycoords[rt].end())-segtree_ycoords[rt].begin());
segtree[rt].resize(2*segtree_ycoords[rt].size());
firsth[rt].resize(2*segtree_ycoords[rt].size());
numpoints[rt].resize(2*segtree_ycoords[rt].size(), 0);
for (int i=0; i<n; i++)
{
int pos=int(lower_bound(xcoords.begin(), xcoords.end(), x[i])-xcoords.begin());
if (pos>=l && pos<=r)
{
//if (firsth[rt][1].size()<44)
//{
firsth[rt][1].pb(pair<int, int> (y[i], h[i]));
//}
numpoints[rt][1]++;
}
}
build_ysegtree_h(rt, 1, 0, segtree_ycoords[rt].size()-1);
if (l==r) return;
build_ycoords(l, (l+r)/2, 2*rt);
build_ycoords((l+r)/2+1, r, 2*rt+1);
}
int ysum(int rt, int yrt, int l, int r, int yl, int yr)
{
if (r<yl || l>yr)
return 0;
if (yl<=l && yr>=r)
return numpoints[rt][yrt];
return ysum(rt, 2*yrt, l, (l+r)/2, yl, yr)+ysum(rt, 2*yrt+1, (l+r)/2+1, r, yl, yr);
}
int querysum(int rt, int l, int r, int xl, int xr, int yl_coord, int yr_coord)
{
if (xl>r || xr<l) return 0;
if (xl<=l && xr>=r)
{
int yl=int(lower_bound(segtree_ycoords[rt].begin(), segtree_ycoords[rt].end(), yl_coord)-segtree_ycoords[rt].begin());
int yr=int(upper_bound(segtree_ycoords[rt].begin(), segtree_ycoords[rt].end(), yr_coord)-segtree_ycoords[rt].begin())-1;
return ysum(rt, 1, 0, segtree_ycoords[rt].size()-1, yl, yr);
}
return querysum(2*rt, l, (l+r)/2, xl, xr, yl_coord, yr_coord) + querysum(2*rt, (l+r)/2+1, r, xl, xr, yl_coord, yr_coord);
}
vector<int> yvec(int rt, int yrt, int l, int r, int yl, int yr)
{
if (r<yl || l>yr)
return vector<int>();
if (yl<=l && yr>=r)
{
vector<int> temp;
for (int a=0; a<firsth[rt][yrt].size(); a++)
{
temp.pb(firsth[rt][yrt][a].second);
}
return temp;
}
vector<int> a=yvec(rt, 2*yrt, l, (l+r)/2, yl, yr);
vector<int> b=yvec(rt, 2*yrt+1, (l+r)/2+1, r, yl, yr);
for (int i=0; i<b.size(); i++)
a.pb(b[i]);
return a;
}
vector<int> queryvec(int rt, int l, int r, int xl, int xr, int yl_coord, int yr_coord)
{
if (xl>r || xr<l) return vector<int>();
if (xl<=l && xr>=r)
{
int yl=int(lower_bound(segtree_ycoords[rt].begin(), segtree_ycoords[rt].end(), yl_coord)-segtree_ycoords[rt].begin());
int yr=int(upper_bound(segtree_ycoords[rt].begin(), segtree_ycoords[rt].end(), yr_coord)-segtree_ycoords[rt].begin())-1;
return yvec(rt, 1, 0, segtree_ycoords[rt].size()-1, yl, yr);
}
vector<int> a=queryvec(2*rt, l, (l+r)/2, xl, xr, yl_coord, yr_coord);
vector<int> b=queryvec(2*rt, (l+r)/2+1, r, xl, xr, yl_coord, yr_coord);
for (int i=0; i<b.size(); i++)
a.pb(b[i]);
return a;
}
int main()
{
cin >> n >> q;
for (int i=0; i<n; i++)
{
cin >> x[i] >> y[i] >> h[i];
xcoords.pb(x[i]);
ycoords.pb(y[i]);
}
sort(xcoords.begin(), xcoords.end());
xcoords.resize(unique(xcoords.begin(), xcoords.end())-xcoords.begin());
sort(ycoords.begin(), ycoords.end());
ycoords.resize(unique(ycoords.begin(), ycoords.end())-ycoords.begin());
build_ycoords(0, xcoords.size()-1, 1);
/*for (int i=1; i<=5; i++)
{
for (int j=0; j<numpoints[i].size(); j++)
{
cout << i << " " << j << " " << numpoints[i][j] << " " << firsth[i][j].size() << endl;
}
}*/
//for (int i=0; i<xcoords.size(); i++)
//cout << xcoords[i] << " ";
//cout << endl;
for (int tctr=0; tctr<q; tctr++)
{
int x0, y0, x1, y1;
cin >> x0 >> y0 >> x1 >> y1;
//cout << x0 << " " << x1 << endl;
int xl=int(lower_bound(xcoords.begin(), xcoords.end(), x0)-xcoords.begin());
int xr=int(upper_bound(xcoords.begin(), xcoords.end(), x1)-xcoords.begin())-1;
//cout << xl << " " << xr << endl;
int howmanypoints=querysum(1, 0, xcoords.size()-1, xl, xr, y0, y1);
if (howmanypoints>50)
{
cout << 1 << endl;
}
else
{
vector<int> temp=queryvec(1, 0, xcoords.size()-1, xl, xr, y0, y1);
sort(temp.begin(), temp.end());
bool flag=false;
for (int i=1; i<temp.size()-1; i++)
{
if (temp[i]+temp[i-1]>temp[i+1])
{
flag=true;
break;
}
}
if (flag)
cout << 1 << endl;
else
cout << 0 << endl;
}
}
}
Details
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Test #1:
score: 100
Accepted
time: 9ms
memory: 40964kb
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 1 0 0 1
result:
ok 5 lines
Test #2:
score: -100
Runtime Error
input:
481 1 8 6788 8975 24 6552 2668 26 7948 4730 40 531 9805 110 1914 1916 164 7073 3371 165 6293 7756 170 9946 2003 179 9654 1700 215 6447 2229 221 3149 3030 242 1999 6843 242 5764 3163 249 3716 8634 250 6801 9317 260 2741 4273 282 5436 4836 284 3951 6483 288 4812 76 375 9004 5492 380 5627 5929 391 6385...