Submission #600729

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
600729	2022-07-21T07:30:21 Z	vovik	Werewolf (IOI18_werewolf)	C++17	Compilation error	0 ms	0 KB

werewolf

#define _GLIBCXX_DEBUG
//I wrote this code 4 u today
#include <bits/stdc++.h>

#define vc vector

#define nd node*
#define pnd pair<nd, nd>

using namespace std;
typedef long long ll;
typedef vector<ll> vll;
typedef pair<ll, ll> pll;
typedef vc<pll> vpll;
typedef vc<vll> vvll;
typedef vc<vpll> vvpll;

template<const ll MOD>
struct mod_mul : multiplies<const ll> {
    ll operator()(const ll a, const ll b) {
        return (a * b) % MOD;
    }
};


template<typename T>
inline void sort(T &a) {
    sort(a.begin(), a.end());
}

template<typename T>
inline void unique(T &a) {
    a.resize(unique(a.begin(), a.end()) - a.begin());
}

template<typename T>
inline void reverse(T &a) {
    reverse(a.begin(), a.end());
}

const ll INF = 9023372036854775808ll;
const ll MOD = 1000000007ll;

struct DSU {
    static const int MAXN = 205;
    vc<int> down[MAXN];
    int p[MAXN], f[MAXN], s[MAXN];

    DSU() { iota(p, p + MAXN, 0); }

    int get(int v) { return p[v] == v ? v : p[v] = get(p[v]); }

    void merge(int v, int u) {//v->u
        v = get(v), u = get(u);
        if (v == u) return;
        p[u] = v, down[v].push_back(u);
    }

    vc<int> ei;

    void dfs(int v) {
        f[v] = ei.size();
        ei.push_back(v);
        for (auto to: down[v]) dfs(to);
        s[v] = ei.size();
    }

    void build_tour() {
        for (int v = 0; v < MAXN; ++v) if (get(v) == v) dfs(v);
    }
};

vector<int>
check_validity(int N, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R) {
    vc<vc<int>> s(N), l(N);
    DSU a, b;
    for (int i = 0; i < X.size(); ++i) {
        if (X[i] < Y[i]) swap(X[i], Y[i]);
        s[X[i]].push_back(Y[i]);
        l[Y[i]].push_back(X[i]);
    }
    vc<int> t1(S.size()), t2(S.size());
    vc<int> ord(S.size());
    iota(ord.begin(), ord.end(), 0);
    int j = 0;
    for (int v = 0; v < N; ++v) {
        for (auto to: s[v]) a.merge(v, to);
        while (j < ord.size() && R[ord[j]] == v) t1[ord[j]] = a.get(E[ord[j]]), ++j;
    }
    reverse(ord), j = 0;
    for (int v = N - 1; v >= 0; --v) {
        for (auto to: l[v]) b.merge(v, to);
        while (j < ord.size() && L[ord[j]] == v) t2[ord[j]] = b.get(S[ord[j]]), ++j;
    }
    a.build_tour(), b.build_tour();
    vc<int> ans(S.size());
    vc<int> v(N, -1);
    for (int i = 0; i < ans.size(); ++i) {
        for (int j = a.f[t1[i]]; j < a.s[t1[i]]; ++j) v[a.ei[j]] = i;
        for (int j = b.f[t2[i]]; j < b.s[t2[i]]; ++j) ans[i] |= v[b.ei[j]] == i;
    }
    return ans;
}


#ifdef VOVA

namespace {

    int read_int() {
        int x;
        if (scanf("%d", &x) != 1) {
            fprintf(stderr, "Error while reading input\n");
            exit(1);
        }
        return x;
    }

}  // namespace

int main() {
    int N = read_int();
    int M = read_int();
    int Q = read_int();
    vector<int> X(M), Y(M), S(Q), E(Q), L(Q), R(Q);
    for (int j = 0; j < M; ++j) {
        X[j] = read_int();
        Y[j] = read_int();
    }
    for (int i = 0; i < Q; ++i) {
        S[i] = read_int();
        E[i] = read_int();
        L[i] = read_int();
        R[i] = read_int();
    }

    vector<int> A = check_validity(N, X, Y, S, E, L, R);
    for (size_t i = 0; i < A.size(); ++i) {
        printf("%d\n", A[i]);
    }
    return 0;
}

#endif

Compilation message

werewolf.cpp: In function 'std::__debug::vector<int> check_validity(int, std::__debug::vector<int>, std::__debug::vector<int>, std::__debug::vector<int>, std::__debug::vector<int>, std::__debug::vector<int>, std::__debug::vector<int>)':
werewolf.cpp:77:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx1998::vector<int, std::allocator<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |     for (int i = 0; i < X.size(); ++i) {
      |                     ~~^~~~~~~~~~
werewolf.cpp:88:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx1998::vector<int, std::allocator<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |         while (j < ord.size() && R[ord[j]] == v) t1[ord[j]] = a.get(E[ord[j]]), ++j;
      |                ~~^~~~~~~~~~~~
werewolf.cpp:93:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx1998::vector<int, std::allocator<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |         while (j < ord.size() && L[ord[j]] == v) t2[ord[j]] = b.get(S[ord[j]]), ++j;
      |                ~~^~~~~~~~~~~~
werewolf.cpp:98:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx1998::vector<int, std::allocator<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |     for (int i = 0; i < ans.size(); ++i) {
      |                     ~~^~~~~~~~~~~~
/usr/bin/ld: /tmp/ccrCtaVa.o: in function `main':
grader.cpp:(.text.startup+0x377): undefined reference to `check_validity(int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status