oj.uz

답안 #374224

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
374224 2021-03-06T23:37:52 Z MilosMilutinovic Ice Hockey World Championship (CEOI15_bobek) C++14
20 / 100
 550 ms 8664 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
const int N=45;
ll a[N];
int main(){
    int n;scanf("%i",&n);
    ll m;scanf("%lld",&m);
    for(int i=0;i<n;i++)scanf("%lld",&a[i]);
    int b=n/2;
    vector<ll> all;
    ll ans=1;
    for(int i=1;i<(1<<b);i++){
        ll sum=0LL;
        for(int j=0;j<b;j++){
            if(i&(1<<j))sum+=a[j];
        }
        all.pb(sum);
        if(sum<=m)ans++;
        //printf("%lld\n",sum);
    }
    sort(all.begin(),all.end());
    int sz=n-b;
    auto Get=[&](ll x){
        if(x>m)return 0;
        return (int)(lower_bound(all.begin(),all.end(),m-x)-all.begin());
    };
    for(int i=1;i<(1<<sz);i++){
        ll sum=0LL;
        for(int j=0;j<sz;j++){
            if(i&(1<<j))sum+=a[b+j];
        }
        //printf("%lld\n",sum);
        ans+=Get(sum);
        if(sum<=m)ans++;
    }
    printf("%lld",ans);
}

Compilation message

bobek.cpp: In function 'int main()':
bobek.cpp:8:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |     int n;scanf("%i",&n);
      |           ~~~~~^~~~~~~~~
bobek.cpp:9:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |     ll m;scanf("%lld",&m);
      |          ~~~~~^~~~~~~~~~~
bobek.cpp:10:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |     for(int i=0;i<n;i++)scanf("%lld",&a[i]);
      |                         ~~~~~^~~~~~~~~~~~~~

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 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 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 372 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 Incorrect 1 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
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 Incorrect 1 ms 364 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 34 ms 1000 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 45 ms 1508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 76 ms 1508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 363 ms 4572 KB Output is correct
2 Correct 31 ms 1000 KB Output is correct
3 Correct 11 ms 748 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Incorrect 9 ms 748 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 1000 KB Output is correct
2 Correct 99 ms 2528 KB Output is correct
3 Correct 12 ms 748 KB Output is correct
4 Correct 10 ms 748 KB Output is correct
5 Incorrect 122 ms 2528 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 420 ms 8664 KB Output is correct
2 Correct 35 ms 1000 KB Output is correct
3 Correct 11 ms 748 KB Output is correct
4 Correct 550 ms 8664 KB Output is correct
5 Incorrect 154 ms 4572 KB Output isn't correct
6 Halted 0 ms 0 KB -