Submission #1263234

#	Time	Username	Problem	Language	Result	Execution time	Memory
1263234		blueviolet	Cave (IOI13_cave)	C++20	Compilation error	0 ms	0 KiB

cave

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

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

int s[5009], d[5009];
set<int> st;

void exploreCave(int N) {
    for (int i = 0; i < N; i++) {
        s[i] = 0;
        d[i] = 0;
        st.insert(i);
    }

    while (true) {
        int firstClosed = tryCombination(s);
        if (firstClosed == -1) break;

        for (auto id = st.begin(); id != st.end();) {
            int pos = *id;
            s[pos] ^= 1;
            int pp = tryCombination(s);
            if (pp == -1) break;

            if (pp < firstClosed) {
                s[pos] ^= 1;
                d[pos] = pp;
                id = st.erase(id);  // xoá và cập nhật iterator
            } else if (pp > firstClosed) {
                d[pos] = firstClosed;
                id = st.erase(id);  // xoá và cập nhật iterator
                break;
            } else {
                s[pos] ^= 1;
                ++id;
            }
        }
    }
    answer(s, d);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cccXh9XW.o: in function `exploreCave(int)':
cave.cpp:(.text+0xe4): undefined reference to `tryCombination(int*)'
/usr/bin/ld: cave.cpp:(.text+0x108): undefined reference to `tryCombination(int*)'
/usr/bin/ld: cave.cpp:(.text+0x134): undefined reference to `tryCombination(int*)'
/usr/bin/ld: cave.cpp:(.text+0x154): undefined reference to `answer(int*, int*)'
/usr/bin/ld: /tmp/ccvtRuTO.o: in function `main':
grader.c:(.text.startup+0x10): undefined reference to `exploreCave'
collect2: error: ld returned 1 exit status