이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#include "shoes.h"
using namespace std;
/*<DEBUG>*/
#define tem template <typename
#define can_shift(_X_, ...) enable_if_t<sizeof test<_X_>(0) __VA_ARGS__ 8, debug&> operator<<(T i)
#define _op debug& operator<<
tem C > auto test(C *x) -> decltype(cerr << *x, 0LL);
tem C > char test(...);
tem C > struct itr{C begin, end; };
tem C > itr<C> get_range(C b, C e) { return itr<C>{b, e}; }
struct debug{
#ifdef _LOCAL
~debug(){ cerr << endl; }
tem T > can_shift(T, ==){ cerr << boolalpha << i; return *this; }
tem T> can_shift(T, !=){ return *this << get_range(begin(i), end(i)); }
tem T, typename U > _op (pair<T, U> i){
return *this << "< " << i.first << " , " << i.second << " >"; }
tem T> _op (itr<T> i){
*this << "{ ";
for(auto it = i.begin; it != i.end; it++){
*this << " , " + (it==i.begin?2:0) << *it;
}
return *this << " }";
}
#else
tem T> _op (const T&) { return *this; }
#endif
};
tem T>
string _ARR_(T* arr, int sz){
string ret = "{ " + to_string(arr[0]);
for(int i = 1; i < sz; i++) ret += " , " + to_string(arr[i]);
ret += " }"; return ret;
}
#define exp(...) " [ " << #__VA_ARGS__ << " : " << (__VA_ARGS__) << " ]"
/*</DEBUG>*/
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef unsigned int uint;
typedef pair<int, int> pii;
//mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
#define pb push_back
#define FAST ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define TC int __TC__; cin >> __TC__; while(__TC__--)
#define ar array
const int INF = 1e9 + 7;
ll count_swaps(vector<int> s) {
int n = s.size();
int ans = 0, ans2=0;
int pos = 0, pos2 = 1;
for(int i = 0; i < n; ++i){
if(s[i] < 0){
ans += abs(i - pos);
pos += 2;
}else{
ans2 += abs(i - pos2);
pos2 += 2;
}
}
assert(ans == ans2);
return min(ans, ans2);
}
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