This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/*
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*/
#include"bits/stdc++.h"
#pragma GCC optimize("O3", "unroll-loops")
#define ll long long
#define ld long double
#define ff first
#define ss second
#define db double
#define time_begin() auto begin = chrono::high_resolution_clock::now()
#define time_end() auto end = chrono::high_resolution_clock::now(); auto elapsed = chrono::duration_cast<chrono::nanoseconds>(end-begin); auto sec = elapsed.count() * 1e-9; cerr << "\n\nExecution time: " << sec << " seconds";
#define check_time() cerr << "\nStatus : "; if (sec>1) cerr << "Time Limit Exceeded 1!!!1!111"; else cerr << "You good brother"
#define precision(x) fixed << setprecision((x))
#define check_ok(s) cout << s << " is aight" << '\n'
#define pii pair<int, int>
#define mp make_pair
using namespace std;
void setIO(string s = ""){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
if (!s.empty()){
freopen((s+".in").c_str(), "r", stdin);
freopen((s+".out").c_str(), "w", stdout);
}
}
struct Tree {
ll x, y, r;
};
struct Edge {
int u, v;
ll w;
Edge(int uu, int vv, ll ww) : u(uu), v(vv), w(ww){
}
bool operator < (const Edge &other){
return w < other.w;
}
};
ll dist(ll x1, ll y1, ll x2, ll y2, ll r1, ll r2){
return (ll)(sqrt(1LL*(x1-x2)*(x1-x2) + 1LL*(y1-y2)*(y1-y2)) - r1 - r2);
}
int pre[4] = {3, 0, 1, 2};
vector<Edge> edge;
struct DSU{
vector<int> e;
DSU(int n): e(n, -1){
}
int find(int x){
return (e[x] < 0 ? x : e[x]= find(e[x]));
}
bool unite(int x, int y){
x = find(x);
y = find(y);
if (x == y) return 0;
if (e[x] > e[y]) swap(x, y);
e[x] += e[y];
e[y] = x;
return 1;
}
};
int main(){
setIO();
int n, m;
cin >> n >> m;
int w, h;
cin >> w >> h;
vector<Tree> tree(n);
for (int i = 0; i < n;i++){
cin >> tree[i].x >> tree[i].y >> tree[i].r;
edge.push_back(Edge(0, i+4, dist(tree[i].x, 0, tree[i].x, tree[i].y, tree[i].r, 0)));
edge.push_back(Edge(1, i+4, dist(w, tree[i].y, tree[i].x, tree[i].y, tree[i].r, 0)));
edge.push_back(Edge(2, i+4, dist(tree[i].x, h, tree[i].x, tree[i].y, tree[i].r, 0)));
edge.push_back(Edge(3, i+4, dist(0, tree[i].y, tree[i].x, tree[i].y, tree[i].r, 0)));
for (int j = 0; j < i; j++){
edge.push_back(Edge(j+4, i+4, dist(tree[j].x, tree[j].y, tree[i].x, tree[i].y, tree[j].r, tree[i].r)));
}
}
sort(edge.begin(), edge.end());
vector<pair<ll, pii>> guest;
for (int i = 0; i < m; i++){
ll r;
int e;
cin >> r >> e;
guest.push_back(mp(r*2, mp(--e, i)));
}
sort(guest.begin(), guest.end());
vector<vector<bool>> ok(m, vector<bool>(4, true));
int p = 0;
DSU dsu(n+4);
for (const Edge &e : edge){
while (p < m && guest[p].ff <= e.w){
int cur_entr = guest[p].ss.ff;
int idx = guest[p].ss.ss;
bool conn[4][4];
for (int i = 0; i < 4; i++){
conn[i][i] = true;
for (int j = i+1; j < 4; j++){
conn[i][j] = (dsu.find(i) == dsu.find(j));
conn[j][i] = conn[i][j];
}
}
if (cur_entr == 0){
if (conn[0][1]) ok[idx][1] = false;
if (conn[0][2]) ok[idx][1] = ok[idx][2] = false;
if (conn[0][3]) ok[idx][1] = ok[idx][2] = ok[idx][3] = false;
if (conn[1][2]) ok[idx][2] = false;
if (conn[1][3]) ok[idx][2] = ok[idx][3] = false;
if (conn[2][3]) ok[idx][3] = false;
} else if (cur_entr == 1){
if (conn[0][1]) ok[idx][0] = ok[idx][2] = ok[idx][3] = false;
if (conn[0][2]) ok[idx][0] = ok[idx][3] = false;
if (conn[0][3]) ok[idx][0] = false;
if (conn[1][2]) ok[idx][2] = false;
if (conn[1][3]) ok[idx][2] = ok[idx][3] = false;
if (conn[2][3]) ok[idx][3] = false;
} else if (cur_entr == 2){
if (conn[0][1]) ok[idx][1] = false;
if (conn[0][2]) ok[idx][3] = ok[idx][0] = false;
if (conn[0][3]) ok[idx][0] = 0;
if (conn[1][2]) ok[idx][3] = ok[idx][0] = ok[idx][1] = 0;
if (conn[1][3]) ok[idx][0] = ok[idx][1] = 0;
if (conn[2][3]) ok[idx][3] = 0;
} else {
assert(cur_entr == 3);
if (conn[0][1]) ok[idx][1] = 0;
if (conn[0][2]) ok[idx][1] = ok[idx][2] = 0;
if (conn[0][3]) ok[idx][0] = 0;
if (conn[1][2]) ok[idx][2] = 0;
if (conn[1][3]) ok[idx][0] = ok[idx][1] = 0;
if (conn[2][3]) ok[idx][0] = ok[idx][1] = ok[idx][2] = 0;
}
p++;
if (p >= m) break;
}
dsu.unite(e.u, e.v);
}
for (int i = 0; i < m; i++){
for (int j = 0; j < 4; j++) if (ok[i][j]) cout << j+1;
cout << '\n';
}
}
Compilation message (stderr)
park.cpp: In function 'void setIO(std::string)':
park.cpp:143:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
143 | freopen((s+".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
park.cpp:144:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
144 | freopen((s+".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| # | Verdict | Execution time | Memory | Grader output |
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