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Submission #949002

# Submission time Handle Problem Language Result Execution time Memory
949002 2024-03-18T19:08:19 Z vjudge1 Land of the Rainbow Gold (APIO17_rainbow) C++17
11 / 100
 3000 ms 107600 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.insert({sr,sc});
	rep(i,0,2e5+5){
		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});
	repa(e,nriver) 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++;
	return c;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 56656 KB Output is correct
2 Correct 636 ms 57016 KB Output is correct
3 Correct 193 ms 56856 KB Output is correct
4 Correct 293 ms 56908 KB Output is correct
5 Correct 734 ms 57148 KB Output is correct
6 Correct 69 ms 56660 KB Output is correct
7 Correct 58 ms 56572 KB Output is correct
8 Correct 49 ms 56660 KB Output is correct
9 Correct 57 ms 56668 KB Output is correct
10 Correct 60 ms 56660 KB Output is correct
11 Correct 442 ms 57172 KB Output is correct
12 Correct 548 ms 56916 KB Output is correct
13 Correct 914 ms 57156 KB Output is correct
14 Correct 957 ms 57312 KB Output is correct
15 Correct 48 ms 56660 KB Output is correct
16 Correct 47 ms 56652 KB Output is correct
17 Correct 52 ms 56612 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 56652 KB Output is correct
2 Correct 52 ms 56612 KB Output is correct
3 Execution timed out 3027 ms 73328 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 56660 KB Output is correct
2 Correct 1321 ms 96284 KB Output is correct
3 Correct 1117 ms 96084 KB Output is correct
4 Correct 1816 ms 107600 KB Output is correct
5 Correct 808 ms 87316 KB Output is correct
6 Correct 95 ms 64684 KB Output is correct
7 Incorrect 170 ms 68788 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 56656 KB Output is correct
2 Correct 636 ms 57016 KB Output is correct
3 Correct 193 ms 56856 KB Output is correct
4 Correct 293 ms 56908 KB Output is correct
5 Correct 734 ms 57148 KB Output is correct
6 Correct 69 ms 56660 KB Output is correct
7 Correct 58 ms 56572 KB Output is correct
8 Correct 49 ms 56660 KB Output is correct
9 Correct 57 ms 56668 KB Output is correct
10 Correct 60 ms 56660 KB Output is correct
11 Correct 442 ms 57172 KB Output is correct
12 Correct 548 ms 56916 KB Output is correct
13 Correct 914 ms 57156 KB Output is correct
14 Correct 957 ms 57312 KB Output is correct
15 Correct 48 ms 56660 KB Output is correct
16 Correct 47 ms 56652 KB Output is correct
17 Correct 52 ms 56612 KB Output is correct
18 Execution timed out 3046 ms 74100 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 56656 KB Output is correct
2 Correct 636 ms 57016 KB Output is correct
3 Correct 193 ms 56856 KB Output is correct
4 Correct 293 ms 56908 KB Output is correct
5 Correct 734 ms 57148 KB Output is correct
6 Correct 69 ms 56660 KB Output is correct
7 Correct 58 ms 56572 KB Output is correct
8 Correct 49 ms 56660 KB Output is correct
9 Correct 57 ms 56668 KB Output is correct
10 Correct 60 ms 56660 KB Output is correct
11 Correct 442 ms 57172 KB Output is correct
12 Correct 548 ms 56916 KB Output is correct
13 Correct 914 ms 57156 KB Output is correct
14 Correct 957 ms 57312 KB Output is correct
15 Correct 48 ms 56660 KB Output is correct
16 Correct 47 ms 56652 KB Output is correct
17 Correct 52 ms 56612 KB Output is correct
18 Execution timed out 3046 ms 74100 KB Time limit exceeded
19 Halted 0 ms 0 KB -