제출 #1219112

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1219112		theiulius	Coins (IOI17_coins)	C++20	컴파일 에러	0 ms	0 KiB

coins

#include<bits/stdc++.h>
#include "coins.h"
using namespace std;
#define int long long
#define ff first
#define ss second
#define pb push_back
int t;
const int N = 1e6 + 6;

std::vector<int> coin_flips(std::vector<int> b, int c) {
    std::vector<int> flips;
    
    for (int i = 0; i <= 6; i++){
        if (((1 << i) & c) != b[i]){
            flips.pb(i);
        }
    }
    while (flips.size() < 8){
        flips.pb(7);
    }
    
    return flips;
}

int find_coin(std::vector<int> b) {
    int num = 0;
    for (int i = 0; i <= 6; i++){
        num += (1 << i) * b[i];
    }
    return num;
}


main(){
    /*ifstream cin(".in");
    ofstream cout(".out");*/
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}

컴파일 시 표준 에러 (stderr) 메시지

coins.cpp:35:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   35 | main(){
      | ^~~~
/usr/bin/ld: /tmp/ccp6fubg.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc8EQOav.o:coins.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccp6fubg.o: in function `main':
grader.cpp:(.text.startup+0x3e2): undefined reference to `coin_flips(std::vector<int, std::allocator<int> >, int)'
/usr/bin/ld: grader.cpp:(.text.startup+0xb8a): undefined reference to `find_coin(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status