| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 85931 | 2018-11-23T05:42:35 Z | shoemakerjo | Aliens (IOI07_aliens) | C++14 | Compilation error |
0 ms | 0 KB |
#include <bits/stdc++.h>
using namespace std;
int N, x0, y0;
bool isin(int xx, int yy) {
if (0 >= xx || xx > N) return false;
if (yy <= 0 || yy > N) return false;
cout << "examine " << xx << " " << yy << endl;
string ans;
cin >> ans;
return ans == "true";
}
int main() {
cin >> N >> x0 >> y0;
//do left and right
//need to find last guy that is a hit or something
//can binary search to the edge of this
int nx, ny, lx, ly; //next x, next y, last x, last y
int lo = x0;
int hi = N;
while (lo < hi) {
int mid = (lo+hi+1)/2;
if (isin(mid, y0)) {
lo = mid;
}
else {
hi = mid-1;
}
}
nx = lo;
hi = x0;
lo = 1;
while (lo < hi) {
int mid = (lo+hi)/2;
if (isin(mid, y0)) {
hi = mid;
}
else {
lo = mid+1;
}
}
lx = lo;
lo = y0;
hi = N;
while (lo < hi) {
int mid = (lo+hi+1)/2;
if (isin(x0, mid)) {
lo = mid;
}
else {
hi = mid-1;
}
}
ny = lo;
hi = y0;
lo = 1;
while (lo < hi) {
int mid = (lo+hi)/2;
if (isin(x0, mid)) {
hi = mid;
}
else {
lo = mid+1;
}
}
//now we have all the guys
int xans, yans;
int mcur = (lx+nx)/2;
if (!isin(mcur, y0)) {
int m = (nx-lx+1)/3;
while (isin(nx + m*2, y0)) {
nx += m*2;
}
while (isin(lx - m*2, y0)) {
lx -= m*2;
}
}
else {
int m = (nx-lx+1);
while (isin(nx + m*2, y0)) {
nx += m*2;
}
while (isin(lx - m*2, y0)) {
lx -= m*2;
}
}
xans = (nx + lx)/2;
mcur = (ly + ny)/2;
if (!isin(x0, mcur)) {
int m = (ny - ly + 1)/3;
while (isin(x0, ny+m*2)) {
ny += m*2;
}
while (isin(x0, ly - m*2)) {
ly -= m*2;
}
}
else {
int m = (ny - ly + 1);
while (isin(x0, ny+m*2)) {
ny += m*2;
}
while (isin(x0, ly - m*2)) {
ly -= m*2;
}
}
yans = (ly + ny)/2;
cout << "solution " << xans << " " << yans << endl;
}
Compilation message
aliens.cpp:5:12: error: 'int y0' redeclared as different kind of symbol
int N, x0, y0;
^~
In file included from /usr/include/features.h:367:0,
from /usr/include/x86_64-linux-gnu/c++/7/bits/os_defines.h:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/c++config.h:533,
from /usr/include/c++/7/cassert:43,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:33,
from aliens.cpp:1:
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:250:1: note: previous declaration 'double y0(double)'
__MATHCALL (y0,, (_Mdouble_));
^
aliens.cpp: In function 'int main()':
aliens.cpp:19:17: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' and 'double(double) throw ()')
cin >> N >> x0 >> y0;
~~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(__istream_type& (*__pf)(__istream_type&))
^~~~~~~~
/usr/include/c++/7/istream:120:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&) {aka std::basic_istream<char>& (*)(std::basic_istream<char>&)}' [-fpermissive]
cin >> N >> x0 >> y0;
^~
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(__ios_type& (*__pf)(__ios_type&))
^~~~~~~~
/usr/include/c++/7/istream:124:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'std::basic_istream<char>::__ios_type& (*)(std::basic_istream<char>::__ios_type&) {aka std::basic_ios<char>& (*)(std::basic_ios<char>&)}' [-fpermissive]
cin >> N >> x0 >> y0;
^~
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(ios_base& (*__pf)(ios_base&))
^~~~~~~~
/usr/include/c++/7/istream:131:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'std::ios_base& (*)(std::ios_base&)' [-fpermissive]
cin >> N >> x0 >> y0;
^~
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(bool& __n)
^~~~~~~~
/usr/include/c++/7/istream:168:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: warning: the address of 'double y0(double)' will never be NULL [-Waddress]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind non-const lvalue reference of type 'bool&' to an rvalue of type 'bool'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(short& __n);
^~~~~~~~
/usr/include/c++/7/istream:172:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'short int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(short int)y0' to 'short int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(unsigned short& __n)
^~~~~~~~
/usr/include/c++/7/istream:175:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'short unsigned int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(short unsigned int)y0' to 'short unsigned int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(int& __n);
^~~~~~~~
/usr/include/c++/7/istream:179:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(int)y0' to 'int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(unsigned int& __n)
^~~~~~~~
/usr/include/c++/7/istream:182:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'unsigned int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(unsigned int)y0' to 'unsigned int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(long& __n)
^~~~~~~~
/usr/include/c++/7/istream:186:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'long int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(long int)y0' to 'long int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(unsigned long& __n)
^~~~~~~~
/usr/include/c++/7/istream:190:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'long unsigned int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(long unsigned int)y0' to 'long unsigned int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(long long& __n)
^~~~~~~~
/usr/include/c++/7/istream:195:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'long long int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(long long int)y0' to 'long long int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(unsigned long long& __n)
^~~~~~~~
/usr/include/c++/7/istream:199:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'long long unsigned int' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(long long unsigned int)y0' to 'long long unsigned int&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>
operator>>(void*& __p)
^~~~~~~~
/usr/include/c++/7/istream:235:7: note: conversion of argument 1 would be ill-formed:
aliens.cpp:19:20: error: invalid conversion from 'double (*)(double) throw ()' to 'void*' [-fpermissive]
cin >> N >> x0 >> y0;
^~
aliens.cpp:19:20: error: cannot bind rvalue '(void*)y0' to 'void*&'
In file included from /usr/include/c++/7/sstream:38:0,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/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>]
operator>>(float& __f)
^~~~~~~~
/usr/include/c++/7/istream:214:7: note: no known conversion for argument 1 from 'double(double) throw ()' to 'float&'
/usr/include/c++/7/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>]
operator>>(double& __f)
^~~~~~~~
/usr/include/c++/7/istream:218:7: note: no known conversion for argument 1 from 'double(double) throw ()' to 'double&'
/usr/include/c++/7/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>]
operator>>(long double& __f)
^~~~~~~~
/usr/include/c++/7/istream:222:7: note: no known conversion for argument 1 from 'double(double) throw ()' to 'long double&'
/usr/include/c++/7/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>]
operator>>(__streambuf_type* __sb);
^~~~~~~~
/usr/include/c++/7/istream:259:7: note: no known conversion for argument 1 from 'double(double) throw ()' to 'std::basic_istream<char>::__streambuf_type* {aka std::basic_streambuf<char>*}'
In file included from /usr/include/c++/7/string:53:0,
from /usr/include/c++/7/bits/locale_classes.h:40,
from /usr/include/c++/7/bits/ios_base.h:41,
from /usr/include/c++/7/ios:42,
from /usr/include/c++/7/istream:38,
from /usr/include/c++/7/sstream:38,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/bits/basic_string.tcc:1465:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)
operator>>(basic_istream<_CharT, _Traits>& __in,
^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1465:5: note: template argument deduction/substitution failed:
aliens.cpp:19:20: note: mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>' and 'double(double) throw ()'
cin >> N >> x0 >> y0;
^~
In file included from /usr/include/c++/7/istream:991:0,
from /usr/include/c++/7/sstream:38,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/bits/istream.tcc:963:5: note: candidate: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:963:5: note: template argument deduction/substitution failed:
aliens.cpp:19:20: note: deduced conflicting types for parameter '_CharT2' ('char' and 'double(double) throw ()')
cin >> N >> x0 >> y0;
^~
In file included from /usr/include/c++/7/istream:991:0,
from /usr/include/c++/7/sstream:38,
from /usr/include/c++/7/complex:45,
from /usr/include/c++/7/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
from aliens.cpp:1:
/usr/include/c++/7/bits/istream.tcc:931:5: note: candidate: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:931:5: note: template argument deduction/substitution failed:
aliens.cpp:19:20: note: