Submission #431026

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
431026	2021-06-17 08:59:40	tengiz05	Regions (IOI09_regions)	C++17	80 / 100	8095 ms	103436 KiB

regions

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#include <bits/stdc++.h>
using i64 = long long;
constexpr int N = 2e5, R = 500;
int ans[R][R];
std::vector<int> e[N], c[R * R], actual[R * R];
int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    int n, m, q;
    std::cin >> n >> m >> q;
    std::vector<int> a(n);
    std::cin >> a[0];
    for (int i = 1, p; i < n; i++) {
        std::cin >> p >> a[i];
        p--;
        e[p].push_back(i);
    }
    std::vector<int> in(n), out(n);
    int timeStamp = 0;
    std::function<void(int)> dfs = [&](int u) {
        in[u] = timeStamp++;
        for (auto v : e[u]) {
            dfs(v);
        }
        out[u] = timeStamp;
    };
    dfs(0);
    for (int i = 0; i < n; i++) {
        c[--a[i]].push_back(in[i]);
        actual[a[i]].push_back(i);
 
 
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XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

regions.cpp: In function 'int main()':
regions.cpp:32:10: warning: variable 'is' set but not used [-Wunused-but-set-variable]
   32 |     auto is = [&](int u, int v) { return in[u] < in[v] && out[u] >= out[v]; };
      |          ^~

• Subtask 1: 15 / 15
• Subtask 2: 65 / 85