| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 533038 | 2022-03-04T14:35:49 Z | chaoyue | Aliens (IOI07_aliens) | C++17 | Compilation error |
0 ms | 0 KB |
#include <bits/stdc++.h>
using namespace std;
#define ll long long
int n, x0, y0, tops, bottoms, lefts, rights, cx, cy, length;
int c, var, m, mm, mmm; //c is constant, var is shiftable coordinate
bool vertical; //whether analysing vertical
bool examine(int a){
string s;
if(vertical){
cout<<"examine "<<x0<<" "<<a<<flush;
}
else{
cout<<"examine "<<a<<" "<<y0<<flush;
}
cin>>s;
if(s == "true") return 1;
return 0;
}
bool query(int x, int y){
string s;
cout<<"examine "<<x<<" "<<y<<flush;
cin>>s;
if(s == "true") return 1;
return 0;
}
void bs(){ //inital binary search
while(true){
m = (c+var)/2;
if(examine(m)) break;
var = m;
}
}
int getcase(){ //1 -> is first square, 2 -> is second square, 3 -> is third square
mm = (c+m)/2;
mmm = (c+mm)/2;
if(!examine(mm)){
return 2;
}
else{
if(examine(mmm)) return 1;
return 3;
}
}
int bs2(int l, int r){
if(l > r) swap(l, r);
while(r-l > 1){
int mid = (l+r)/2;
if(examine(mid)){
if(var > c){
l = mid;
}
else{
r = mid;
}
}
else{
if(var > c){
r = mid;
}
else{
l = mid;
}
}
}
if(var > c) return l;
return r;
}
int side(int C, int VAR, bool VERTICAL){
int square;
vertical = VERTICAL;
c = C;
var = VAR;
bs();
square = getcase();
if(square == 2){
return bs2(c, mm);
}
else if(square == 1){
return bs2(m, var);
}
else{
return bs2(c, mmm);
}
}
int diag(int hor, int ver){
int newx, newy;
for(int i=1; i<=4; i++){
newx = cx + hor * i * length;
newy = cy + ver * i * length;
if(newx <= 0 || newx > n || newy <= 0 || newy > n || !query(newx, newy)) return i-1;
}
return 4;
}
void solve(){
rights = side(x0, n+1, 0);
lefts = side(x0, -1, 0);
tops = side(y0, n+1, 1);
bottoms = side(y0, -1, 1);
length = rights - lefts + 1;
cx = (lefts + rights)/2;
cy = (bottoms + tops)/2;
int tl, tr, bl, br;
tl = diag(-1, 1);
tr = diag(1, 1);
bl = diag(-1, -1);
br = diag(1, -1);
cx += (br - tl + tr - bl) / 2 * length;
cy += (tl - br + tr - bl) / 2 * length;
cout<<"solution "<<cx<<" "<<cy;
}
int main(){
cin>>n>>x0>>y0;
solve();
return 0;
}
Compilation message
aliens.cpp:6:12: error: 'int y0' redeclared as different kind of entity
6 | int n, x0, y0, tops, bottoms, lefts, rights, cx, cy, length;
| ^~
In file included from /usr/include/features.h:461,
from /usr/include/x86_64-linux-gnu/c++/10/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/c++config.h:518,
from /usr/include/c++/10/cassert:43,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
from aliens.cpp:1:
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:220:1: note: previous declaration 'double y0(double)'
220 | __MATHCALL (y0,, (_Mdouble_));
| ^~~~~~~~~~
aliens.cpp: In function 'bool examine(int)':
aliens.cpp:16:29: warning: the address of 'double y0(double)' will never be NULL [-Waddress]
16 | cout<<"examine "<<a<<" "<<y0<<flush;
| ^~
aliens.cpp: In function 'void solve()':
aliens.cpp:107:14: error: invalid conversion from 'double (*)(double) noexcept' to 'int' [-fpermissive]
107 | tops = side(y0, n+1, 1);
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:76:14: note: initializing argument 1 of 'int side(int, int, bool)'
76 | int side(int C, int VAR, bool VERTICAL){
| ~~~~^
aliens.cpp:108:17: error: invalid conversion from 'double (*)(double) noexcept' to 'int' [-fpermissive]
108 | bottoms = side(y0, -1, 1);
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:76:14: note: initializing argument 1 of 'int side(int, int, bool)'
76 | int side(int C, int VAR, bool VERTICAL){
| ~~~~^
aliens.cpp: In function 'int main()':
aliens.cpp:123:12: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and 'double(double) noexcept')
123 | cin>>n>>x0>>y0;
| ~~~~~~~~~~^~~~
| | |
| | double(double) noexcept
| std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:120:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__istream_type& (*)(std::basic_istream<_CharT, _Traits>::__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
120 | operator>>(__istream_type& (*__pf)(__istream_type&))
| ^~~~~~~~
/usr/include/c++/10/istream:120:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'} [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:124:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__ios_type& (*)(std::basic_istream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>; std::basic_istream<_CharT, _Traits>::__ios_type = std::basic_ios<char>]' (near match)
124 | operator>>(__ios_type& (*__pf)(__ios_type&))
| ^~~~~~~~
/usr/include/c++/10/istream:124:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&)' {aka 'std::basic_ios<char>& (*)(std::basic_ios<char>&)'} [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:131:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(std::ios_base& (*)(std::ios_base&)) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
131 | operator>>(ios_base& (*__pf)(ios_base&))
| ^~~~~~~~
/usr/include/c++/10/istream:131:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'std::ios_base& (*)(std::ios_base&)' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:168:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
168 | operator>>(bool& __n)
| ^~~~~~~~
/usr/include/c++/10/istream:168:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: warning: the address of 'double y0(double)' will never be NULL [-Waddress]
123 | cin>>n>>x0>>y0;
| ^~
aliens.cpp:123:14: error: cannot bind non-const lvalue reference of type 'bool&' to an rvalue of type 'bool'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:172:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
172 | operator>>(short& __n);
| ^~~~~~~~
/usr/include/c++/10/istream:172:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'short int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(short int)y0' to 'short int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:175:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
175 | operator>>(unsigned short& __n)
| ^~~~~~~~
/usr/include/c++/10/istream:175:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'short unsigned int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(short unsigned int)y0' to 'short unsigned int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:179:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
179 | operator>>(int& __n);
| ^~~~~~~~
/usr/include/c++/10/istream:179:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(int)y0' to 'int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:182:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
182 | operator>>(unsigned int& __n)
| ^~~~~~~~
/usr/include/c++/10/istream:182:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'unsigned int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(unsigned int)y0' to 'unsigned int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:186:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
186 | operator>>(long& __n)
| ^~~~~~~~
/usr/include/c++/10/istream:186:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'long int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(long int)y0' to 'long int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:190:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
190 | operator>>(unsigned long& __n)
| ^~~~~~~~
/usr/include/c++/10/istream:190:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'long unsigned int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(long unsigned int)y0' to 'long unsigned int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:195:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
195 | operator>>(long long& __n)
| ^~~~~~~~
/usr/include/c++/10/istream:195:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'long long int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(long long int)y0' to 'long long int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
199 | operator>>(unsigned long long& __n)
| ^~~~~~~~
/usr/include/c++/10/istream:199:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'long long unsigned int' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(long long unsigned int)y0' to 'long long unsigned int&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:235:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]' (near match)
235 | operator>>(void*& __p)
| ^~~~~~~~
/usr/include/c++/10/istream:235:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:123:14: error: invalid conversion from 'double (*)(double) noexcept' to 'void*' [-fpermissive]
123 | cin>>n>>x0>>y0;
| ^~
| |
| double (*)(double) noexcept
aliens.cpp:123:14: error: cannot bind rvalue '(void*)y0' to 'void*&'
In file included from /usr/include/c++/10/sstream:38,
from /usr/include/c++/10/complex:45,
from /usr/include/c++/10/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
from aliens.cpp:1:
/usr/include/c++/10/istream:214:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
214 | operator>>(float& __f)
| ^~~~~~~~
/usr/include/c++/10/istream:214:25: note: no known conversion for argument 1 from 'double(double) noexcept' to 'float&'
214 | operator>>(float& __f)
| ~~~~~~~^~~
/usr/include/c++/10/istream:218:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
218 | operator>>(double& __f)
| ^~~~~~~~
/usr/include/c++/10/istream:218:26: note: no known conversion for argument 1 from 'double(double) noexcept' to 'double&'
218 | operator>>(double& __f)
| ~~~~~~~~^~~
/usr/include/c++/10/istream:222:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>]'
222 | operator>>(long double& __f)
| ^~~~~~~~
/usr/include/c++/10/istream:222:31: note: no known conversion for argument 1 from 'double(double) noexcept' to 'long double&'
222 | operator>>(long double& __f)
| ~~~~~~~~~~~~~^~~
/usr/include/c++/10/istream:259:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(std::basic_istream<_CharT, _Traits>::__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__streambuf_type = std::basic_streambuf<char>]'
259 | operator>>(__streambuf_type* __sb);
| ^~~~~~~~
/usr/include/c++/10/istream:259:36: note: no known conversion for argument 1 from 'double(double) noexcept' to 'std::basic