A24002. #include <iostream> #include <algorithm> #include <vector> const int MAXN = 100000; const long long LIM = 1000000000000000000ll; int n, m, deg[MAXN]; std::vector<int> E[MAXN]; long long k, f[MAXN]; i…

#include <iostream>
#include <algorithm>
#include <vector>

const int MAXN = 100000;
const long long LIM = 1000000000000000000ll;

int n, m, deg[MAXN];
std::vector<int> E[MAXN];
long long k, f[MAXN];

int next(std::vector<int> cand, long long &k) {
    std::sort(cand.begin(), cand.end());
    for (int u : cand) {
        if (①) return u;
        k -= f[u];
    }
    return -1;
}

int main() {
    std::cin >> n >> m >> k;
    for (int i = 0; i < m; ++i) {
        int u, v;
        std::cin >> u >> v; // 一条从u到v的边
        E[u].push_back(v);
        ++deg[v];
    }
    std::vector<int> Q;
    for (int i = 0; i < n; ++i)
        if (!deg[i]) Q.push_back(i);
    for (int i = 0; i < n; ++i) {
        int u = Q[i];
        for (int v : E[u]) {
            if (②)
                Q.push_back(v);
            --deg[v];
        }
    }
    std::reverse(Q.begin(), Q.end());
    for (int u : Q) {
        f[u] = 1;
        for (int v : E[u])
            f[u] = ③;
    }
    int u = next(Q, k);
    std::cout << u << std::endl;
    while (④) {
        ⑤;
        u = next(E[u], k);
        std::cout << u << std::endl;
    }
    return 0;
}

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