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Submission #949031

# Submission time Handle Problem Language Result Execution time Memory
949031 2024-03-18T20:21:31 Z Saul0906 Land of the Rainbow Gold (APIO17_rainbow) C++14
11 / 100
 3000 ms 107576 KB 
#include <bits/stdc++.h>
#include "rainbow.h"
#define rep(a,b,c) for(int a=b; a<c; a++)
#define repa(a,b) for(auto a: b)
#define pii pair<int, int>
#define fi first
#define se second
#define pb push_back

using namespace std;

set<pii> river;
set<int> rows[200005], cols[200005];
vector<pii> nriver;

void init(int R, int C, int sr, int sc, int M, char *S){
	river.clear();
	nriver.clear();
	river.insert({sr,sc});
	rep(i,0,2e5+5){
		cols[i].clear();
		rows[i].clear();
		cols[i].insert(0);
		cols[i].insert(R+1);
		rows[i].insert(0);
		rows[i].insert(C+1);
	}
	rep(i,0,M){
		nriver.pb({sr+1,sc});
		nriver.pb({sr-1,sc});
		nriver.pb({sr,sc+1});
		nriver.pb({sr,sc-1});
		rows[sr].insert(sc);
		cols[sc].insert(sr);
		if(S[i]=='N') sr--;
		else if(S[i]=='S') sr++;
		else if(S[i]=='W') sc--;
		else sc++;
		river.insert({sr,sc});
	}
	nriver.pb({sr+1,sc});
	nriver.pb({sr-1,sc});
	nriver.pb({sr,sc+1});
	nriver.pb({sr,sc-1});
	rows[sr].insert(sc);
	cols[sc].insert(sr);
}

set<pii> vis;
map<pii,pii> dsu;

pii find(pii a){
	if(!dsu.count(a) || dsu[a]==a) return a;
	return dsu[a]=find(dsu[a]);
}

void join(pii a, pii b){
	dsu[find(a)]=find(b);
}

void dfs(int x, int y, int ar, int ac, int br, int bc){
	if(x<ar || x>br || y<ac || y>bc) return;
	vis.insert({x,y});
	join({x,y},{x,y});
	auto it=rows[x].lower_bound(y);
	int y1, y2, x1, x2;
	y2=*it;
	it--;
	y1=*it;
	it=cols[y].lower_bound(x);
	x2=*it;
	it--;
	x1=*it;
	y1=max(y1,ac-1)+1;
	y2=min(y2,bc+1)-1;
	x1=max(x1,ar-1)+1;
	x2=min(x2,br+1)-1;
	if(!river.count({x,y1})) join({x,y},{x,y1});
	if(!river.count({x,y2})) join({x,y},{x,y2});
	if(!river.count({x1,y})) join({x,y},{x1,y});
	if(!river.count({x2,y})) join({x,y},{x2,y});
	if(!river.count({x,y1}) && !vis.count({x,y1})) dfs(x,y1,ar,ac,br,bc);
	if(!river.count({x,y2}) && !vis.count({x,y2})) dfs(x,y2,ar,ac,br,bc);
	if(!river.count({x1,y}) && !vis.count({x1,y})) dfs(x1,y,ar,ac,br,bc);
	if(!river.count({x2,y}) && !vis.count({x2,y})) dfs(x2,y,ar,ac,br,bc);
}

int colour(int ar, int ac, int br, int bc){
	vis.clear();
	dsu.clear();
	int c=0;
	nriver.pb({ar,ac});
	nriver.pb({br,bc});
	vector<pii> ext;
	repa(e,nriver) if(!river.count(e) && !vis.count(e)){
		if(e.fi<br && !river.count({e.fi+1,e.se})) e.fi++;
		if(e.fi>ar && !river.count({e.fi-1,e.se})) e.fi--;
		if(e.se<bc && !river.count({e.fi,e.se+1})) e.se++;
		if(e.se>ac && !river.count({e.fi,e.se-1})) e.se--;
	}
	repa(e,nriver) if(!river.count(e) && !vis.count(e)) dfs(e.fi,e.se,ar,ac,br,bc);
	repa(e,ext) if(!river.count(e) && !vis.count(e)) dfs(e.fi,e.se,ar,ac,br,bc);
	nriver.pop_back();
	nriver.pop_back();
	repa(e,dsu) if(e.fi==e.se) c++;
	//, cout<<e.fi.fi<<" "<<e.fi.se<<endl;
	return c;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 56668 KB Output is correct
2 Correct 1089 ms 56864 KB Output is correct
3 Correct 229 ms 56864 KB Output is correct
4 Correct 324 ms 56876 KB Output is correct
5 Correct 1304 ms 57168 KB Output is correct
6 Correct 50 ms 56796 KB Output is correct
7 Correct 49 ms 56656 KB Output is correct
8 Correct 46 ms 56536 KB Output is correct
9 Correct 45 ms 56664 KB Output is correct
10 Correct 46 ms 56660 KB Output is correct
11 Correct 597 ms 56916 KB Output is correct
12 Correct 841 ms 57176 KB Output is correct
13 Correct 1391 ms 57128 KB Output is correct
14 Correct 1937 ms 57500 KB Output is correct
15 Correct 46 ms 56656 KB Output is correct
16 Correct 46 ms 56656 KB Output is correct
17 Correct 45 ms 56668 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 56656 KB Output is correct
2 Correct 45 ms 56668 KB Output is correct
3 Execution timed out 3049 ms 72368 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 56656 KB Output is correct
2 Correct 1302 ms 96200 KB Output is correct
3 Correct 1144 ms 95884 KB Output is correct
4 Correct 1887 ms 107576 KB Output is correct
5 Correct 850 ms 86396 KB Output is correct
6 Correct 109 ms 64196 KB Output is correct
7 Incorrect 194 ms 68568 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 56668 KB Output is correct
2 Correct 1089 ms 56864 KB Output is correct
3 Correct 229 ms 56864 KB Output is correct
4 Correct 324 ms 56876 KB Output is correct
5 Correct 1304 ms 57168 KB Output is correct
6 Correct 50 ms 56796 KB Output is correct
7 Correct 49 ms 56656 KB Output is correct
8 Correct 46 ms 56536 KB Output is correct
9 Correct 45 ms 56664 KB Output is correct
10 Correct 46 ms 56660 KB Output is correct
11 Correct 597 ms 56916 KB Output is correct
12 Correct 841 ms 57176 KB Output is correct
13 Correct 1391 ms 57128 KB Output is correct
14 Correct 1937 ms 57500 KB Output is correct
15 Correct 46 ms 56656 KB Output is correct
16 Correct 46 ms 56656 KB Output is correct
17 Correct 45 ms 56668 KB Output is correct
18 Execution timed out 3012 ms 73728 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 56668 KB Output is correct
2 Correct 1089 ms 56864 KB Output is correct
3 Correct 229 ms 56864 KB Output is correct
4 Correct 324 ms 56876 KB Output is correct
5 Correct 1304 ms 57168 KB Output is correct
6 Correct 50 ms 56796 KB Output is correct
7 Correct 49 ms 56656 KB Output is correct
8 Correct 46 ms 56536 KB Output is correct
9 Correct 45 ms 56664 KB Output is correct
10 Correct 46 ms 56660 KB Output is correct
11 Correct 597 ms 56916 KB Output is correct
12 Correct 841 ms 57176 KB Output is correct
13 Correct 1391 ms 57128 KB Output is correct
14 Correct 1937 ms 57500 KB Output is correct
15 Correct 46 ms 56656 KB Output is correct
16 Correct 46 ms 56656 KB Output is correct
17 Correct 45 ms 56668 KB Output is correct
18 Execution timed out 3012 ms 73728 KB Time limit exceeded
19 Halted 0 ms 0 KB -