제출 #609690

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
609690		sword060	Unscrambling a Messy Bug (IOI16_messy)	C++17	컴파일 에러	0 ms	0 KiB

messy

#include "messy.h"
 #include <bits/stdc++.h>
using namespace std;
int* restore_permutation(int x, int w, int r){
  int ans[10];
  for(int i=0;i<x;i++)ans[i]=i+1;
  string p="";
  for(int i=0;i<x;i++)p+='0';
  for(int i=0;i<p.size();i++){
    p[i]='1';
    add_element(p);
  }
  compile_set();
  for(int i=1;i<=(1LL<<x);i++){
    string l="";
    int xd=i,zz=8;
    while(zz--)l+=(xd%2?'1':'0'),xd/=2;
    reverse(l.begin(),l.end());
    bool f=check_element(l);
    if(!f)continue;
    for(int i=0;i<x;i++){
      if(l[i]!='1'||i==x-1||l[i+1]=='1')continue;
      for(int j=x-1;j>=i+2;j--){
        if(l[j]=='0'){
          swap(ans[j],ans[i]);
          return ans;
        }
      }
    }
  }
  return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

messy.cpp:4:6: error: ambiguating new declaration of 'int* restore_permutation(int, int, int)'
    4 | int* restore_permutation(int x, int w, int r){
      |      ^~~~~~~~~~~~~~~~~~~
In file included from messy.cpp:1:
messy.h:10:18: note: old declaration 'std::vector<int> restore_permutation(int, int, int)'
   10 | std::vector<int> restore_permutation(int n, int w, int r);
      |                  ^~~~~~~~~~~~~~~~~~~
messy.cpp: In function 'int* restore_permutation(int, int, int)':
messy.cpp:9:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |   for(int i=0;i<p.size();i++){
      |               ~^~~~~~~~~
messy.cpp:26:18: warning: address of local variable 'ans' returned [-Wreturn-local-addr]
   26 |           return ans;
      |                  ^~~
messy.cpp:5:7: note: declared here
    5 |   int ans[10];
      |       ^~~
messy.cpp:31:10: warning: address of local variable 'ans' returned [-Wreturn-local-addr]
   31 |   return ans;
      |          ^~~
messy.cpp:5:7: note: declared here
    5 |   int ans[10];
      |       ^~~