Submission #154057

#	Time	Username	Problem	Language	Result	Execution time	Memory
154057		nthoang	Combo (IOI18_combo)	C++11	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>

#ifdef LOCAL
#include "/Users/nth842002/Library/debug.h"
#endif

using namespace std;

const char moves[] = {'A', 'B', 'X', 'Y'};

int press(string p) {
}

string guess_sequence(int n) {
  for (int mask = 0; mask < (1 << (n + n)); mask++) {
    string s;
    s.resize(n);
    for (int i = 0, t = mask; i < n; i++) {
      s[i] = moves[t % 4];
      t /= 4;
    }
    if (press(s) == n) {
      return s;
    }
  }
}

int main() {

}

Compilation message (stderr)

combo.cpp: In function 'int press(std::string)':
combo.cpp:12:1: warning: no return statement in function returning non-void [-Wreturn-type]
   12 | }
      | ^
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type]
   26 | }
      | ^
/usr/bin/ld: /tmp/ccvuQjy2.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/ccZ1fjkZ.o:combo.cpp:(.text.unlikely+0x0): first defined here
/usr/bin/ld: /tmp/ccvuQjy2.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccZ1fjkZ.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status