#include <bits/stdc++.h>
using i64 = long long;
inline i64 sq(int x) { return i64(x) * x; }
int main(){
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int n;
std::cin >> n;
std::vector<int> x(n), y(n), r(n);
for (int i = 0; i < n; i++) {
std::cin >> x[i] >> y[i] >> r[i];
}
std::vector<int> ans(n, -1);
std::vector<int> ind(n);
iota(ind.begin(), ind.end(), 0);
sort(ind.begin(), ind.end(), [&](int i, int j) {
if (r[i] == r[j]) return i < j;
return r[i] > r[j];
});
std::set<std::pair<int, int>> sr;
for (int i = 0; i < n; i++) {
sr.emplace(x[i] + r[i], i);
sr.emplace(x[i] - r[i], i);
}
for (auto i : ind) {
if(~ans[i])continue;
while (sr.size()) {
auto it = sr.lower_bound({x[i] - r[i], -1});
if (it == sr.end()) break;
int j = it->second;
if(it->first>x[i]+r[i])break;
sr.erase(it);
if(~ans[it->second])continue;
ans[id->second]=i;
}
}
for (auto x : ans) assert(~x), std::cout << x + 1 << ' ';
std::cout << '\n';
}
Compilation message
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:34:19: error: 'id' was not declared in this scope; did you mean 'it'?
34 | ans[id->second]=i;
| ^~
| it
circle_selection.cpp:30:21: warning: unused variable 'j' [-Wunused-variable]
30 | int j = it->second;
| ^
