제출 #726965

#제출 시각아이디문제언어결과실행 시간메모리
726965viwlesxqArranging Shoes (IOI19_shoes)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace std; using namespace __gnu_pbds; typedef int64_t ll; typedef string str; #define ordered_set tree <int, null_type, less <int>, rb_tree_tag, tree_order_statistics_node_update> signed main() { int n; cin >> n; int S[n]; for (int i = 0; i < n; ++i) { cin >> S[i]; } ll ans = 0; for (int i = 0; i < n; ++i) { S[i] += n; } vector <deque <int>> pos(2 * n + 1); vector <bool> used(n, false); ordered_set st; for (int i = 0; i < n; ++i) { pos[S[i]].push_back(i); } for (int i = 0; i + 1 < n; ++i) { if (used[i]) { continue; } if (S[i] > n) { int left = S[i] - n - 2 * (S[i] - n) + n, right = S[i]; int from = pos[left].front(); ans += from - i; ans -= (int)st.order_of_key(from + 1) - (int)st.order_of_key(i); st.insert(i), st.insert(from); used[i] = true, used[from] = true; pos[left].pop_front(), pos[right].pop_front(); } else { int left = S[i], right = S[i] - n - 2 * (S[i] - n) + n; int from = pos[right].front(); ans += from - i - 1; ans -= (int)st.order_of_key(from + 1) - (int)st.order_of_key(i); st.insert(i), st.insert(from); used[i] = true, used[from] = true; pos[left].pop_front(), pos[right].pop_front(); } } cout << ans; }

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cccCf0MR.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccjsyNQQ.o:shoes.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cccCf0MR.o: in function `main':
grader.cpp:(.text.startup+0x2a8): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status