Submission #857475

#	Time	Username	Problem	Language	Result	Execution time	Memory
857475		chilinhxyzabc	Cave (IOI13_cave)	C++17	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[n], d[n];
    for(int i = 0; i < n; i++) {
        s[i] = 1;
        d[i] = -1;
    }
    int curDoor = tryCombination(s);
    while(curDoor != -1) {
        int l = 0, r = n - 1, res = n - 1;
        while(l <= r) {
            int m = (l + r) / 2;
            s[m] = 1 - s[m];
            int door = tryCombination(s);
            if(door == curDoor) {
                r = m - 1;
            } else {
                res = m;
                l = m + 1;
            }
            s[m] = 1 - s[m];
        }
        d[res] = curDoor;
        s[res] = 1 - s[res];
        curDoor = tryCombination(s);
    }
    for(int i = 0; i < n; i++) {
        if(d[i] != -1)
            continue;
        s[i] = 1 - s[i];
        int door = tryCombination(s);
        d[i] = door;
        s[i] = 1 - s[i];
    }
    answer(s, d);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccSJu19Z.o: in function `main':
grader.c:(.text.startup+0x10): undefined reference to `exploreCave'
/usr/bin/ld: /tmp/ccablJzY.o: in function `exploreCave(int)':
cave.cpp:(.text+0xf9): undefined reference to `tryCombination(int*)'
/usr/bin/ld: cave.cpp:(.text+0x175): undefined reference to `tryCombination(int*)'
/usr/bin/ld: cave.cpp:(.text+0x1b1): undefined reference to `tryCombination(int*)'
/usr/bin/ld: cave.cpp:(.text+0x1e9): undefined reference to `tryCombination(int*)'
/usr/bin/ld: cave.cpp:(.text+0x210): undefined reference to `answer(int*, int*)'
/usr/bin/ld: cave.cpp:(.text+0x24f): undefined reference to `tryCombination(int*)'
collect2: error: ld returned 1 exit status