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답안 #905065

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
905065 2024-01-12T13:47:28 Z marvinthang Fish 2 (JOI22_fish2) C++17
13 / 100
 4000 ms 12636 KB 
/*************************************
*    author: marvinthang             *
*    created: 12.01.2024 20:25:24    *
*************************************/

#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> a(n); cin >> a;
	int q; cin >> q;
	vector <long long> pref(n + 1);
	int l = __lg(n);
	if (MASK(l) < n) ++l;
	vector mx(n, vector<int>(l));
	auto prepare = [&] {
		REP(i, n) {
			pref[i + 1] = pref[i] + a[i];
			mx[i][0] = a[i];
		}
		FOR(k, 1, l) REP(i, n - MASK(k) + 1) mx[i][k] = max(mx[i][k - 1], mx[i + MASK(k - 1)][k - 1]);
	};
	prepare();
	while (q--) {
		int t, l, r; cin >> t >> l >> r; --l;
		if (t == 1) {
			a[l] = r;
			prepare();
		} else {
			auto get_max = [&] (int l, int r) {
				int h = __lg(r - l + 1);
				return max(mx[l][h], mx[r - MASK(h) + 1][h]);
			};
			int res = 0;
			FOR(i, l, r) {
				int cur_l = i, cur_r = i + 1;
				long long cur_sum = a[i];
				while (true) {
					int lx = l, rx = cur_l - 1;
					bool ok = false;
					while (lx <= rx) {
						int m = lx + rx >> 1;
						if (get_max(m, cur_l - 1) <= cur_sum) rx = m - 1;
						else lx = m + 1;
					}
					if (lx < cur_l) {
						cur_sum += pref[cur_l] - pref[lx];
						cur_l = lx;
						ok = true;
					}
					lx = cur_r + 1, rx = r;
					while (lx <= rx) {
						int m = lx + rx >> 1;
						if (get_max(cur_r, m - 1) <= cur_sum) lx = m + 1;
						else rx = m - 1;
					}
					if (cur_r < rx) {
						cur_sum += pref[rx] - pref[cur_r];
						cur_r = rx;
						ok = true;
					}
					if (!ok) break;
				}
				res += cur_l == l && cur_r == r;
			}
			cout << res << '\n';
		}
	}
}

int main(void) {
	ios_base::sync_with_stdio(false); cin.tie(nullptr); // cout.tie(nullptr);
	file("fish2");
	// int t; cin >> t; while (t--)
	process();
	// cerr << "Time elapsed: " << TIME << " s.\n";
	return (0^0);
}

Compilation message

fish2.cpp: In function 'void process()':
fish2.cpp:79:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   79 |       int m = lx + rx >> 1;
      |               ~~~^~~~
fish2.cpp:90:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   90 |       int m = lx + rx >> 1;
      |               ~~~^~~~
fish2.cpp: In function 'int main()':
fish2.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); }
      |                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
fish2.cpp:110:2: note: in expansion of macro 'file'
  110 |  file("fish2");
      |  ^~~~
fish2.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); }
      |                                                                                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
fish2.cpp:110:2: note: in expansion of macro 'file'
  110 |  file("fish2");
      |  ^~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 8 ms 348 KB Output is correct
6 Correct 10 ms 348 KB Output is correct
7 Correct 5 ms 348 KB Output is correct
8 Correct 6 ms 344 KB Output is correct
9 Correct 14 ms 348 KB Output is correct
10 Correct 5 ms 348 KB Output is correct
11 Correct 8 ms 492 KB Output is correct
12 Correct 5 ms 348 KB Output is correct
13 Correct 11 ms 348 KB Output is correct
14 Correct 6 ms 348 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Correct 16 ms 348 KB Output is correct
17 Correct 5 ms 348 KB Output is correct
18 Correct 12 ms 348 KB Output is correct
19 Correct 5 ms 500 KB Output is correct
20 Correct 21 ms 344 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 47 ms 11796 KB Output is correct
3 Correct 44 ms 11612 KB Output is correct
4 Correct 40 ms 11608 KB Output is correct
5 Correct 39 ms 11612 KB Output is correct
6 Correct 43 ms 11612 KB Output is correct
7 Correct 79 ms 11868 KB Output is correct
8 Correct 54 ms 12636 KB Output is correct
9 Correct 75 ms 11868 KB Output is correct
10 Correct 50 ms 12388 KB Output is correct
11 Correct 50 ms 11868 KB Output is correct
12 Correct 52 ms 11868 KB Output is correct
13 Correct 53 ms 11868 KB Output is correct
14 Correct 39 ms 12380 KB Output is correct
15 Correct 45 ms 12400 KB Output is correct

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 8 ms 348 KB Output is correct
6 Correct 10 ms 348 KB Output is correct
7 Correct 5 ms 348 KB Output is correct
8 Correct 6 ms 344 KB Output is correct
9 Correct 14 ms 348 KB Output is correct
10 Correct 5 ms 348 KB Output is correct
11 Correct 8 ms 492 KB Output is correct
12 Correct 5 ms 348 KB Output is correct
13 Correct 11 ms 348 KB Output is correct
14 Correct 6 ms 348 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Correct 16 ms 348 KB Output is correct
17 Correct 5 ms 348 KB Output is correct
18 Correct 12 ms 348 KB Output is correct
19 Correct 5 ms 500 KB Output is correct
20 Correct 21 ms 344 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 47 ms 11796 KB Output is correct
23 Correct 44 ms 11612 KB Output is correct
24 Correct 40 ms 11608 KB Output is correct
25 Correct 39 ms 11612 KB Output is correct
26 Correct 43 ms 11612 KB Output is correct
27 Correct 79 ms 11868 KB Output is correct
28 Correct 54 ms 12636 KB Output is correct
29 Correct 75 ms 11868 KB Output is correct
30 Correct 50 ms 12388 KB Output is correct
31 Correct 50 ms 11868 KB Output is correct
32 Correct 52 ms 11868 KB Output is correct
33 Correct 53 ms 11868 KB Output is correct
34 Correct 39 ms 12380 KB Output is correct
35 Correct 45 ms 12400 KB Output is correct
36 Execution timed out 4067 ms 12316 KB Time limit exceeded
37 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 47 ms 11796 KB Output is correct
3 Correct 44 ms 11612 KB Output is correct
4 Correct 40 ms 11608 KB Output is correct
5 Correct 39 ms 11612 KB Output is correct
6 Correct 43 ms 11612 KB Output is correct
7 Correct 79 ms 11868 KB Output is correct
8 Correct 54 ms 12636 KB Output is correct
9 Correct 75 ms 11868 KB Output is correct
10 Correct 50 ms 12388 KB Output is correct
11 Correct 50 ms 11868 KB Output is correct
12 Correct 52 ms 11868 KB Output is correct
13 Correct 53 ms 11868 KB Output is correct
14 Correct 39 ms 12380 KB Output is correct
15 Correct 45 ms 12400 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Execution timed out 4030 ms 12320 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 47 ms 11796 KB Output is correct
3 Correct 44 ms 11612 KB Output is correct
4 Correct 40 ms 11608 KB Output is correct
5 Correct 39 ms 11612 KB Output is correct
6 Correct 43 ms 11612 KB Output is correct
7 Correct 79 ms 11868 KB Output is correct
8 Correct 54 ms 12636 KB Output is correct
9 Correct 75 ms 11868 KB Output is correct
10 Correct 50 ms 12388 KB Output is correct
11 Correct 50 ms 11868 KB Output is correct
12 Correct 52 ms 11868 KB Output is correct
13 Correct 53 ms 11868 KB Output is correct
14 Correct 39 ms 12380 KB Output is correct
15 Correct 45 ms 12400 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Execution timed out 4062 ms 12380 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 8 ms 348 KB Output is correct
6 Correct 10 ms 348 KB Output is correct
7 Correct 5 ms 348 KB Output is correct
8 Correct 6 ms 344 KB Output is correct
9 Correct 14 ms 348 KB Output is correct
10 Correct 5 ms 348 KB Output is correct
11 Correct 8 ms 492 KB Output is correct
12 Correct 5 ms 348 KB Output is correct
13 Correct 11 ms 348 KB Output is correct
14 Correct 6 ms 348 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Correct 16 ms 348 KB Output is correct
17 Correct 5 ms 348 KB Output is correct
18 Correct 12 ms 348 KB Output is correct
19 Correct 5 ms 500 KB Output is correct
20 Correct 21 ms 344 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 47 ms 11796 KB Output is correct
23 Correct 44 ms 11612 KB Output is correct
24 Correct 40 ms 11608 KB Output is correct
25 Correct 39 ms 11612 KB Output is correct
26 Correct 43 ms 11612 KB Output is correct
27 Correct 79 ms 11868 KB Output is correct
28 Correct 54 ms 12636 KB Output is correct
29 Correct 75 ms 11868 KB Output is correct
30 Correct 50 ms 12388 KB Output is correct
31 Correct 50 ms 11868 KB Output is correct
32 Correct 52 ms 11868 KB Output is correct
33 Correct 53 ms 11868 KB Output is correct
34 Correct 39 ms 12380 KB Output is correct
35 Correct 45 ms 12400 KB Output is correct
36 Execution timed out 4067 ms 12316 KB Time limit exceeded
37 Halted 0 ms 0 KB -