oj.uz

답안 #241667

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
241667 2020-06-25T07:53:58 Z anonymous Ice Hockey World Championship (CEOI15_bobek) C++14
90 / 100
 1000 ms 72380 KB 
#include <iostream>
#include <unordered_map>
#include <vector>
#include <algorithm>
#define LL long long
using namespace std;
LL N, M, Wt[45], Ways;
unordered_map <LL, LL> Freq;
vector <pair<LL,LL> > Freq2;
int main() {
    //freopen("bobekin.txt","r",stdin);
    scanf("%lld %lld",&N,&M);
    for (int i=0; i < N; i++) {
        scanf("%lld", &Wt[i]);
    }
    for (int i=0; i < 1<<(N/2); i++) {
        LL wt = 0;
        for (int j=0; j < N/2; j++) {
            if (i & (1<<j)) {wt += Wt[j];}
        }
        if (wt <= M) {
            Freq[wt]++;
        }
    }
    for (auto p: Freq) {
        Freq2.push_back(p);
    }
    sort(Freq2.begin(), Freq2.end());
    for (int i=1; i<Freq2.size(); i++) {
        Freq2[i].second += Freq2[i-1].second;
    }

    for (int i=0; i < 1<< (N - N/2); i++) {
        LL wt = 0;
        for (int j=0; j < N - N/2; j++) {
            if (i & (1<<j)) {wt += Wt[j + N/2];}
        }
        if (wt <= M) {
            auto it = upper_bound(Freq2.begin(), Freq2.end(), pair <LL,LL> {M - wt + 1, 0});
            Ways += Freq2[it - Freq2.begin() - 1].second;
        }
    }
    printf("%lld",Ways);
}

Compilation message

bobek.cpp: In function 'int main()':
bobek.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=1; i<Freq2.size(); i++) {
                   ~^~~~~~~~~~~~~
bobek.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld",&N,&M);
     ~~~~~^~~~~~~~~~~~~~~~~~~
bobek.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", &Wt[i]);
         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 256 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 432 KB Output is correct
7 Correct 5 ms 128 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 256 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 256 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 43 ms 1152 KB Output is correct
2 Correct 147 ms 12468 KB Output is correct
3 Correct 631 ms 34156 KB Output is correct
4 Correct 143 ms 12852 KB Output is correct
5 Correct 15 ms 384 KB Output is correct
6 Correct 10 ms 768 KB Output is correct
7 Correct 12 ms 384 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 1788 KB Output is correct
2 Correct 48 ms 3628 KB Output is correct
3 Correct 121 ms 1144 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 10 ms 384 KB Output is correct
6 Correct 20 ms 2352 KB Output is correct
7 Correct 13 ms 256 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 92 ms 7044 KB Output is correct
2 Correct 170 ms 9020 KB Output is correct
3 Correct 202 ms 9020 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 68 ms 256 KB Output is correct
6 Correct 167 ms 1780 KB Output is correct
7 Correct 55 ms 256 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 668 ms 36220 KB Output is correct
2 Correct 52 ms 4752 KB Output is correct
3 Correct 20 ms 2480 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 10 ms 384 KB Output is correct
6 Correct 436 ms 36076 KB Output is correct
7 Correct 15 ms 384 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 4752 KB Output is correct
2 Correct 188 ms 18184 KB Output is correct
3 Correct 19 ms 2480 KB Output is correct
4 Correct 20 ms 2480 KB Output is correct
5 Correct 75 ms 384 KB Output is correct
6 Correct 35 ms 4752 KB Output is correct
7 Correct 138 ms 256 KB Output is correct

Subtask #10
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1028 ms 72380 KB Time limit exceeded
2 Halted 0 ms 0 KB -