# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
291130 |
2020-09-04T17:39:50 Z |
thebes |
Rectangles (IOI19_rect) |
C++14 |
|
5000 ms |
406200 KB |
#include "rect.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pii;
#define F first
#define S second
const int MN = 2505, MM = 13e6;
int N, M, C, i, j, x, y, h[MM], hp[MM], cnt, pre[MN], nxt[MN]; ll ans;
pii bnd[MM]; vi vec[MN], adj[MM], hid[MN]; set<int> go;
map<pii,int> id; queue<pii> q[MN];
vector<pii> evt[MN]; map<pii,int> hist, tmp;
inline void add(int l,int r,int pid,int x,bool col){
if(l!=-1&&r!=-1&&!id.count({l,r})){
if(col){
id[{l,r}]=1;
evt[r-1].push_back({x,l+1});
}
else{
id[{l,r}]=++cnt;
bnd[cnt] = {l+1,r-1};
h[cnt] = x;
if(pid!=-1){
adj[cnt].push_back(pid);
hp[pid] = 1;
}
}
q[r-l].push({l,r});
}
}
inline void process(vi vec,int x,bool col){
C = (int)vec.size();
map<int,int> mp;
for(int i=C-1;i>=0;i--){
auto it=mp.upper_bound(vec[i]);
if(it==mp.end()) nxt[i]=-1;
else nxt[i]=it->S;
while(mp.size()&&mp.begin()->F<=vec[i]) mp.erase(mp.begin());
mp[vec[i]]=i;
}
mp.clear();
for(int i=0;i<C;i++){
auto it=mp.upper_bound(vec[i]);
if(it==mp.end()) pre[i]=-1;
else pre[i]=it->S;
while(mp.size()&&mp.begin()->F<=vec[i]) mp.erase(mp.begin());
mp[vec[i]]=i;
}
id.clear();
queue<pii> hm; vector<pii> tmp;
for(int i=1;i<C-1;i++){
int l = pre[i], r = nxt[i];
if(l!=-1&&r!=-1) tmp.push_back({l,r});
}
sort(tmp.begin(),tmp.end(),[](pii i,pii j){return i.S-i.F<j.S-j.F;});
for(auto v : tmp) hm.push(v);
tmp.clear();
for(int i=0;i<=C;i++){
while(hm.size()&&hm.front().S-hm.front().F==i){
add(hm.front().F,hm.front().S,-1,x,col);
hm.pop();
}
while(q[i].size()){
pii cur = q[i].front(); q[i].pop();
int l, r;
if(vec[cur.F]==vec[cur.S]) l = pre[cur.F], r = nxt[cur.S];
else if(vec[cur.F]<vec[cur.S]) l = pre[cur.F], r = cur.S;
else l = cur.F, r = nxt[cur.S];
add(l,r,id[cur],x,col);
}
}
}
inline void mrg(int x,int y){
if(x^y){
vi res;
for(int i=0,j=0;i<(int)vec[x].size();i++){
while(j+1<(int)vec[y].size()&&vec[y][j]<vec[x][i]) j++;
if(j<vec[y].size()&&vec[x][i]==vec[y][j]) res.push_back(vec[x][i]);
}
vec[x].clear();
vec[y]=res;
}
}
void dfs(int n){
for(auto v : adj[n]){
dfs(v);
mrg(bnd[v].S,bnd[n].S);
}
auto it=go.lower_bound(bnd[n].F);
while(it!=go.end()&&*it<=bnd[n].S){
mrg(*it,bnd[n].S);
auto it2=it; it++;
go.erase(it2);
}
int p = upper_bound(vec[bnd[n].S].begin(),vec[bnd[n].S].end(),h[n])-vec[bnd[n].S].begin();
ans += vec[bnd[n].S].size()-p;
}
long long count_rectangles(vector<vector<int>> a){
vi col;
N = a.size(), M = a[0].size();
for(i=0;i<M;i++){
col.clear();
for(j=0;j<N;j++) col.push_back(a[j][i]);
process(col,i,1);
}
for(i=0;i<N;i++)
process(a[i],i,0);
for(i=1;i<=cnt;i++){
hid[h[i]].push_back(i);
}
for(i=0;i<N;i++){
for(j=0;j<M;j++) vec[j].clear(), go.insert(j);
for(auto v : evt[i]) vec[v.F].push_back(v.S);
for(j=0;j<M;j++) sort(vec[j].begin(),vec[j].end());
tmp.clear();
for(auto v : hid[i]){
h[v] = hist[bnd[v]]+1;
tmp[bnd[v]] = h[v];
h[v] = i-h[v];
}
for(auto v : hid[i]){
if(hp[v]) continue;
dfs(v);
}
swap(hist, tmp);
}
return ans;
}
Compilation message
rect.cpp: In function 'void mrg(int, int)':
rect.cpp:84:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
84 | if(j<vec[y].size()&&vec[x][i]==vec[y][j]) res.push_back(vec[x][i]);
| ~^~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
211 ms |
307536 KB |
Output is correct |
2 |
Correct |
200 ms |
307576 KB |
Output is correct |
3 |
Correct |
203 ms |
307576 KB |
Output is correct |
4 |
Correct |
205 ms |
307576 KB |
Output is correct |
5 |
Correct |
208 ms |
307448 KB |
Output is correct |
6 |
Incorrect |
192 ms |
307576 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
211 ms |
307536 KB |
Output is correct |
2 |
Correct |
200 ms |
307576 KB |
Output is correct |
3 |
Correct |
203 ms |
307576 KB |
Output is correct |
4 |
Correct |
205 ms |
307576 KB |
Output is correct |
5 |
Correct |
208 ms |
307448 KB |
Output is correct |
6 |
Incorrect |
192 ms |
307576 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
211 ms |
307536 KB |
Output is correct |
2 |
Correct |
200 ms |
307576 KB |
Output is correct |
3 |
Correct |
203 ms |
307576 KB |
Output is correct |
4 |
Correct |
205 ms |
307576 KB |
Output is correct |
5 |
Correct |
208 ms |
307448 KB |
Output is correct |
6 |
Incorrect |
192 ms |
307576 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
211 ms |
307536 KB |
Output is correct |
2 |
Correct |
200 ms |
307576 KB |
Output is correct |
3 |
Correct |
203 ms |
307576 KB |
Output is correct |
4 |
Correct |
205 ms |
307576 KB |
Output is correct |
5 |
Correct |
208 ms |
307448 KB |
Output is correct |
6 |
Incorrect |
192 ms |
307576 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
205 ms |
308856 KB |
Output is correct |
2 |
Correct |
220 ms |
308692 KB |
Output is correct |
3 |
Correct |
224 ms |
307704 KB |
Output is correct |
4 |
Correct |
202 ms |
307448 KB |
Output is correct |
5 |
Incorrect |
218 ms |
308600 KB |
Output isn't correct |
6 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
194 ms |
307448 KB |
Output is correct |
2 |
Correct |
2567 ms |
353660 KB |
Output is correct |
3 |
Execution timed out |
5078 ms |
406200 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
211 ms |
307536 KB |
Output is correct |
2 |
Correct |
200 ms |
307576 KB |
Output is correct |
3 |
Correct |
203 ms |
307576 KB |
Output is correct |
4 |
Correct |
205 ms |
307576 KB |
Output is correct |
5 |
Correct |
208 ms |
307448 KB |
Output is correct |
6 |
Incorrect |
192 ms |
307576 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |