#include "rainbow.h"
#include <bits/stdc++.h>
using namespace std;
// #define int long long
#define pii pair<int,int>
#define F first
#define S second
#define pb push_back
// V - E + F = 1 + C ? V - E + F = 3 - C
set<pii> river;
set<pii> fc;
map<pii, int> relabel;
int cc = 0;
class dsu{
public:
void clear_T(){
pai.clear() , peso.clear() , c = 0 ;
}
int fd(int x , bool isr){
if(!pai.count(x)){
peso[x] = 1;
if(!isr)
c++;
return pai[x] = x;
}
return pai[x] == x ? x : pai[x] = fd(pai[x] , isr);
}
void join(int u , int v , bool isr){
if(fd(u,isr) == fd(v,isr)) return;
u = fd(u,isr) , v = fd(v,isr);
if(!isr)
c--;
if(peso[u] > peso[v]) swap(u,v);
pai[u] = v , peso[v] += peso[u];
}
int get_c(){
return c;
}
private:
map<int,int> pai, peso;
int c = 0;
};
int dx[4] = {0 , 1 , 0 , -1};
int dy[4] = {1 , 0 , -1 , 0};
int RR , CC;
int sum[2][200005];
int tudo[200005];
void init(int R, int C, int sr, int sc, int M, char *S) {
river.insert(pii(sr , sc));
tudo[0] = 0;
sum[0][0] = 0;
sum[1][0] = 0;
for(int i = 0 ; i < M ; i ++){
if(S[i] == 'N') sr--;
if(S[i] == 'S') sr++;
if(S[i] == 'E') sc++;
if(S[i] == 'W') sc --;
river.insert(pii(sr , sc));
if(!relabel.count(pii(sr , sc))){
relabel[pii(sr,sc)] = ++ cc;
}
}
dsu T;
for(int j = 1 ; j <= C; j ++){
for(int i = 1; i <= R ; i ++){
if(!relabel.count(pii(i,j))) relabel[pii(i,j)] = ++cc;
T.fd(relabel[pii(i,j)] , river.count(pii(i,j)));
for(int k = 0 ; k < 4 ; k++){
int u = i + dx[k] , v = j + dy[k];
if(u >= 1 && v >= 1 && u <= R && v <= C && v <= j){
if(!relabel.count(pii(u,v))) relabel[pii(u,v)] = ++cc;
T.fd(relabel[pii(u,v)] , river.count(pii(u,v)));
if(river.count(pii(u,v)) == river.count(pii(i, j))){
T.join(relabel[pii(u,v)] , relabel[pii(i, j)] , river.count(pii(u,v)));
}
}
}
}
tudo[j] = T.get_c();
}
T.clear_T();
for(int j = 1 ; j <= C; j ++){
int i = 1;
if(!relabel.count(pii(i,j))) relabel[pii(i,j)] = ++cc;
T.fd(relabel[pii(i,j)] , river.count(pii(i,j)));
for(int k = 0 ; k < 4 ; k++){
int u = i + dx[k] , v = j + dy[k];
if(u >= 1 && v >= 1 && u <= 1 && v <=j ){
if(!relabel.count(pii(u,v))) relabel[pii(u,v)] = ++cc;
T.fd(relabel[pii(u,v)] , river.count(pii(u,v)));
if(river.count(pii(u,v)) == river.count(pii(i, j))){
T.join(relabel[pii(u,v)] , relabel[pii(i, j)] , river.count(pii(u,v)));
}
}
}
sum[i][j] = T.get_c();
}
T.clear_T();
for(int j = 1 ; j <= C; j ++){
int i = 2;
if(!relabel.count(pii(i,j))) relabel[pii(i,j)] = ++cc;
T.fd(relabel[pii(i,j)] , river.count(pii(i,j)));
for(int k = 0 ; k < 4 ; k++){
int u = i + dx[k] , v = j + dy[k];
if(u >= 1 && v >= 1 && u <= 2 && v <= j){
if(!relabel.count(pii(u,v))) relabel[pii(u,v)] = ++cc;
T.fd(relabel[pii(u,v)] , river.count(pii(u,v)));
if(river.count(pii(u,v)) == river.count(pii(i, j))){
T.join(relabel[pii(u,v)] , relabel[pii(i, j)] , river.count(pii(u,v)));
}
}
}
sum[i][j] = T.get_c();
}
RR = R , CC = C;
}
int colour(int ar, int ac, int br, int bc) {
if(ar < br){
int lff = 0;
if(ac > 1) lff = tudo[ac-1];
return tudo[bc] - lff;
}
else{
return sum[ar][bc] - sum[ar][ac - 1];
}
}
// #define int int
Compilation message
rainbow.cpp: In function 'void init(int, int, int, int, int, char*)':
rainbow.cpp:113:14: warning: array subscript is above array bounds [-Warray-bounds]
sum[i][j] = T.get_c();
~~~~~^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
632 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Execution timed out |
3022 ms |
51156 KB |
Time limit exceeded |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
632 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
632 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
