Submission #944347

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
944347	2024-03-12T15:26:16 Z	wii	Cave (IOI13_cave)	C++17	Compilation error	0 ms	0 KB

cave

#include <bits/stdc++.h>
using namespace std;

int tryCombination(int S[]);
void answer(int S[], int D[]);
void exploreCave(int N);

const int MaxN = 5e3;
int S[MaxN], D[MaxN];
int knownD[MaxN], knownS[MaxN], mark[MaxN];

void exploreCave(int N) {
    vector<int> pos;
    for (int i = 0; i < N; ++i)
        pos.push_back(i);

    function<int(int, int)> setup = [&](int u, int mid) {
        for (int i = 0; i < N; ++i) S[i] = !knownS[u];
        for (int i = 0; i <= mid; ++i) S[i] = knownS[u];

        for (int i = 0; i < u; ++i)
            S[knownD[i]] = knownS[i];

        return tryCombination(S);
    };

    function<void(int)> query = [&](int u) {
        cout << u << ": " << endl;

        int l = 0, r = N - u - 1;

        knownS[u] = 0;
        int p = setup(u, -1);
        knownS[u] = p == -1 || p > u;
        while (l <= r) {
            int mid = (l + r) >> 1;
            //cout << " -> " << l << " " << r << " = " << mid << endl;

            int res = setup(u, pos[mid]);
            if (res == -1 || res > u)
                r = mid - 1;
            else
                l = mid + 1;
        } ++r;

        //cout << u << " " << pos[r] << endl;
        knownD[u] = pos[r];

        pos.erase(pos.begin() + r);
    };

    for (int i = 0; i < N; ++i)
        query(i);

    for (int i = 0; i < N; ++i)
        S[knownD[i]] = knownS[i];
    for (int i = 0; i < N; ++i)
        D[knownD[i]] = i;

    answer(S, D);
}

Compilation message

/usr/bin/ld: /tmp/cctcc2iK.o: in function `exploreCave(int)':
cave.cpp:(.text+0x544): undefined reference to `answer(int*, int*)'
/usr/bin/ld: /tmp/cctcc2iK.o: in function `std::_Function_handler<int (int, int), exploreCave(int)::{lambda(int, int)#1}>::_M_invoke(std::_Any_data const&, int&&, std::_Any_data const&)':
cave.cpp:(.text+0x18c): undefined reference to `tryCombination(int*)'
/usr/bin/ld: /tmp/cc25Cz4J.o: in function `main':
grader.c:(.text.startup+0x10): undefined reference to `exploreCave'
collect2: error: ld returned 1 exit status