oj.uz

답안 #336667

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
336667 2020-12-16T09:53:59 Z jbroeksteeg Ice Hockey World Championship (CEOI15_bobek) C++14
100 / 100
 687 ms 25148 KB 
#include <iostream>
#include <climits>
#include <iomanip>
#include <math.h>
#include <numeric>
#include <cassert>
#include <algorithm>
#include <queue>
#include <map>
#include <stack>
#include <set>
#include <vector>
#include <array>
#include <memory>

#define IN(a,b) (a.find(b) != a.end())
#define p(a,b) make_pair(a,b)
#define readVec(a) for (int64_t __i = 0; __i<(int64_t)a.size();__i++){cin>>a[__i];}

// jimjam

template<typename T>
void pMin(T &a, T b) {if (b<a){a=b;}}
template<typename T>
void pMax(T &a, T b) {if (b>a){a=b;}}
template<typename T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& c);
template<typename A, typename B>
std::ostream& operator<<(std::ostream& os, const std::pair<A,B>& c) {std::cout << "(" << c.first << ", " << c.second << ")";return os;}
template<typename T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& c) {
	if (c.size() == 0) {os << "{}"; return os;}
	os << "{" << c[0];
	for (int64_t i = 1; i < (int64_t)c.size(); i++) {os <<", "<<c[i];}
	os << "}";
	return os;
}

const int64_t inf = 2e9;

using namespace std;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	int64_t n, m; cin >> n >> m;
	vector<int64_t> a(n);
	readVec(a);
	if (n==1) {
		cout << 1+(a[0]<=m) << '\n';
		return 0;
	}

	int64_t mid = n/2;
	vector<int64_t> leftSum;
	for (int64_t mask = 0; mask < 1<<(mid+1); mask++) {
		int64_t su=0;
		for (int64_t i = 0; i <= mid; i++) {
			if (mask & (1<<i)) {
				su += a[i];
			}
		}
		leftSum.push_back(su);
	}
	int64_t rL = mid+1;
	int64_t rSize = n-rL;
	vector<int64_t> rightSum;
	for (int64_t mask = 0; mask < 1<<rSize; mask++) {
		int64_t su=0;
		for (int64_t i = mid+1; i < n; i++) {
			if (mask & (1<<(i-(mid+1)))) {
				su += a[i];
			}
		}
		rightSum.push_back(su);
	}
	int64_t ans=0;
	sort(rightSum.begin(),rightSum.end());
	for (int64_t i: leftSum) {
		auto iter = lower_bound(rightSum.begin(),rightSum.end(), m-i+1);
		ans += distance(rightSum.begin(),iter);
	}
	cout << ans << '\n';
	return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 38 ms 2536 KB Output is correct
2 Correct 140 ms 6492 KB Output is correct
3 Correct 687 ms 25060 KB Output is correct
4 Correct 136 ms 6492 KB Output is correct
5 Correct 19 ms 1896 KB Output is correct
6 Correct 8 ms 1132 KB Output is correct
7 Correct 17 ms 1896 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 3428 KB Output is correct
2 Correct 34 ms 2408 KB Output is correct
3 Correct 280 ms 12624 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 8 ms 1132 KB Output is correct
6 Correct 16 ms 1896 KB Output is correct
7 Correct 17 ms 1896 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 70 ms 4452 KB Output is correct
2 Correct 168 ms 8540 KB Output is correct
3 Correct 175 ms 8540 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 86 ms 8540 KB Output is correct
6 Correct 294 ms 25020 KB Output is correct
7 Correct 103 ms 8540 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 362 ms 16784 KB Output is correct
2 Correct 32 ms 2408 KB Output is correct
3 Correct 14 ms 1132 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 9 ms 1132 KB Output is correct
6 Correct 194 ms 16720 KB Output is correct
7 Correct 17 ms 1896 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 34 ms 2408 KB Output is correct
2 Correct 130 ms 6492 KB Output is correct
3 Correct 12 ms 1132 KB Output is correct
4 Correct 14 ms 1132 KB Output is correct
5 Correct 98 ms 8540 KB Output is correct
6 Correct 22 ms 2408 KB Output is correct
7 Correct 330 ms 25020 KB Output is correct

Subtask #10
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 515 ms 25148 KB Output is correct
2 Correct 36 ms 2408 KB Output is correct
3 Correct 14 ms 1132 KB Output is correct
4 Correct 676 ms 25020 KB Output is correct
5 Correct 158 ms 12752 KB Output is correct
6 Correct 16 ms 1896 KB Output is correct
7 Correct 35 ms 3428 KB Output is correct