제출 #942803

#제출 시각아이디문제언어결과실행 시간메모리
942803marvinthangSum Zero (RMI20_sumzero)C++17
100 / 100
263 ms17788 KiB
/************************************* * author: marvinthang * * created: 11.03.2024 10:42:17 * *************************************/ #include <bits/stdc++.h> using namespace std; #define fi first #define se second #define left ___left #define right ___right #define TIME (1.0 * clock() / CLOCKS_PER_SEC) #define MASK(i) (1LL << (i)) #define BIT(x, i) ((x) >> (i) & 1) #define __builtin_popcount __builtin_popcountll #define ALL(v) (v).begin(), (v).end() #define REP(i, n) for (int i = 0, _n = (n); i < _n; ++i) #define REPD(i, n) for (int i = (n); i-- > 0; ) #define FOR(i, a, b) for (int i = (a), _b = (b); i < _b; ++i) #define FORD(i, b, a) for (int i = (b), _a = (a); --i >= _a; ) #define FORE(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i) #define FORDE(i, b, a) for (int i = (b), _a = (a); i >= _a; --i) #define scan_op(...) istream & operator >> (istream &in, __VA_ARGS__ &u) #define print_op(...) ostream & operator << (ostream &out, const __VA_ARGS__ &u) #ifdef LOCAL #include "debug.h" #else #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); } #define DB(...) 23 #define db(...) 23 #define debug(...) 23 #endif template <class U, class V> scan_op(pair <U, V>) { return in >> u.first >> u.second; } template <class T> scan_op(vector <T>) { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; } template <class U, class V> print_op(pair <U, V>) { return out << '(' << u.first << ", " << u.second << ')'; } template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")"; else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); } template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); } template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; } // end of template void process(void) { int n; cin >> n; vector <int> left(n + 2); REP(i, n) cin >> left[i]; map <long long, int> last; long long cur = 0; vector <int> nxt(n + 2, n + 1); last[0] = n; REPD(i, n) { cur += left[i]; if (last.count(cur)) nxt[i] = last[cur]; last[cur] = i; } last.clear(); fill(ALL(left), 0); vector <int> right(n + 2, -1); REPD(i, n + 1) { nxt[i] = min(nxt[i], nxt[i + 1]); left[nxt[i]] = i; if (right[nxt[i]] == -1) right[nxt[i]] = i; } int q; cin >> q; vector <int> qr(q), prv(q); fill(ALL(nxt), -1); REP(i, q) { int l; cin >> l >> qr[i]; --l; prv[i] = nxt[l]; nxt[l] = i; } vector <int> res(q), list_vertices; list_vertices.reserve(n + 2); list_vertices.push_back(n + 1); while (!list_vertices.empty()) { int u = list_vertices.back(); if (left[u] <= right[u]) list_vertices.push_back(left[u]++); else { for (int i = nxt[u]; i >= 0; i = prv[i]) { auto p = partition_point(ALL(list_vertices), [&] (int x) { return x >= qr[i]; }); res[i] = list_vertices.end() - p - 1 + (*prev(p) == qr[i]); } list_vertices.pop_back(); } } REP(i, q) cout << res[i] << '\n'; } int main(void) { ios_base::sync_with_stdio(false); cin.tie(nullptr); // cout.tie(nullptr); file("sumzero"); // int t; cin >> t; while (t--) process(); // cerr << "Time elapsed: " << TIME << " s.\n"; return (0^0); }

컴파일 시 표준 에러 (stderr) 메시지

sumzero.cpp: In function 'int main()':
sumzero.cpp:30:61: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sumzero.cpp:93:2: note: in expansion of macro 'file'
   93 |  file("sumzero");
      |  ^~~~
sumzero.cpp:30:94: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                                                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
sumzero.cpp:93:2: note: in expansion of macro 'file'
   93 |  file("sumzero");
      |  ^~~~
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