#include<bits/stdc++.h>
using namespace std;
using ll = unsigned long long;
int main() {
ll r, x, y, i, can, lo, hi, mid, n, j, ans, t, e;
cin >> n;
vector < pair < ll, ll > > vp;
for (i = 1; i<= n; i ++) {
cin >> x >> y;
vp.push_back({y, x});
}
sort(vp.rbegin(), vp.rend());
ll E[n + 2], X[n +2 ];
for (i = 1; i <= n; i ++) {
E[i] = vp[i - 1].first;
X[i] = vp[i - 1].second;
}
vector < pair < ll, ll > > v;
for (i = 1; i <=n; i ++) {
can= 0;
for ( pair < ll, ll > P : v) {
e= P.first;
x = P.second;
if ( abs(x-X[i]) <= e - E[i]) {
can= 1;
}
}
if ( can == 0) {
v.push_back({E[i], X[i]});
}
}
cout << v.size() << endl;
}
Compilation message (stderr)
Main.cpp: In function 'int main()':
Main.cpp:29:33: error: call of overloaded 'abs(ll)' is ambiguous
29 | if ( abs(x-X[i]) <= e - E[i]) {
| ~~~^~~~~~~~
In file included from /usr/include/c++/11/bits/std_abs.h:38,
from /usr/include/c++/11/cmath:47,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from Main.cpp:1:
/usr/include/stdlib.h:848:12: note: candidate: 'int abs(int)'
848 | extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
| ^~~
In file included from /usr/include/c++/11/cmath:47,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from Main.cpp:1:
/usr/include/c++/11/bits/std_abs.h:103:3: note: candidate: 'constexpr __float128 std::abs(__float128)'
103 | abs(__float128 __x)
| ^~~
/usr/include/c++/11/bits/std_abs.h:85:3: note: candidate: 'constexpr __int128 std::abs(__int128)'
85 | abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; }
| ^~~
/usr/include/c++/11/bits/std_abs.h:79:3: note: candidate: 'constexpr long double std::abs(long double)'
79 | abs(long double __x)
| ^~~
/usr/include/c++/11/bits/std_abs.h:75:3: note: candidate: 'constexpr float std::abs(float)'
75 | abs(float __x)
| ^~~
/usr/include/c++/11/bits/std_abs.h:71:3: note: candidate: 'constexpr double std::abs(double)'
71 | abs(double __x)
| ^~~
/usr/include/c++/11/bits/std_abs.h:61:3: note: candidate: 'long long int std::abs(long long int)'
61 | abs(long long __x) { return __builtin_llabs (__x); }
| ^~~
/usr/include/c++/11/bits/std_abs.h:56:3: note: candidate: 'long int std::abs(long int)'
56 | abs(long __i) { return __builtin_labs(__i); }
| ^~~