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Submission #977076

# Submission time Handle Problem Language Result Execution time Memory
977076 2024-05-07T11:11:06 Z SeenSiravit Ice Hockey World Championship (CEOI15_bobek) C++14
100 / 100
 331 ms 22708 KB 
#include<bits/stdc++.h>
#define ll long long

using namespace std;

const int mxN = 40 + 5;

int n;
ll m;
ll a[mxN];

vector<ll> comb_l , comb_r;

void make_combination(){

    int mid = n/2;

    // comb_l [1 , mid]
    int lim = 1<<mid;

    for(int mask=0;mask<lim;mask++){
        ll sum = 0;
        for(int i=0;i<mid;i++){
            if((1<<i) & mask) sum += a[i];
            if(sum > m) break;
        }

        if(sum <= m) comb_l.push_back(sum);
    }

    sort(comb_l.begin() , comb_l.end());

    // comb_r
    lim = 1<<(n-mid);

    for(int mask=0;mask<lim;mask++){
        ll sum = 0;
        for(int i=0;i<(n-mid);i++){
            if((1<<i) & mask) sum += a[i+mid];
            if(sum>m) break;
        }

        if(sum <= m) comb_r.push_back(sum);
    }

    sort(comb_r.begin() , comb_r.end());
}

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

    cin>> n >> m;

    for(int i=0;i<n;i++) cin>> a[i];

    make_combination();

    // for(auto val : comb_l) cout<< val << " ";
    // cout<< "\n";
    // for(auto val : comb_r) cout<< val << " ";
    // cout<< "\n";

    ll ans = 0;

    for(ll val : comb_r){
        int cnt = upper_bound(comb_l.begin() , comb_l.end() , m - val) - comb_l.begin();
        // cout<< cnt << " ";
        ans += cnt;
    }

    // cout<< "\n";

    cout<< ans;

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 500 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 2020 KB Output is correct
2 Correct 77 ms 5588 KB Output is correct
3 Correct 331 ms 22708 KB Output is correct
4 Correct 77 ms 5444 KB Output is correct
5 Correct 13 ms 1496 KB Output is correct
6 Correct 8 ms 1116 KB Output is correct
7 Correct 1 ms 348 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 2912 KB Output is correct
2 Correct 27 ms 2140 KB Output is correct
3 Correct 136 ms 12580 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 6 ms 1116 KB Output is correct
6 Correct 17 ms 1752 KB Output is correct
7 Correct 1 ms 348 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 3660 KB Output is correct
2 Correct 120 ms 7628 KB Output is correct
3 Correct 116 ms 8528 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 77 ms 7000 KB Output is correct
6 Correct 278 ms 21432 KB Output is correct
7 Correct 3 ms 548 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 241 ms 13284 KB Output is correct
2 Correct 26 ms 2140 KB Output is correct
3 Correct 9 ms 992 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 6 ms 992 KB Output is correct
6 Correct 234 ms 14556 KB Output is correct
7 Correct 1 ms 348 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 2144 KB Output is correct
2 Correct 75 ms 5324 KB Output is correct
3 Correct 8 ms 1112 KB Output is correct
4 Correct 8 ms 992 KB Output is correct
5 Correct 81 ms 6988 KB Output is correct
6 Correct 25 ms 2144 KB Output is correct
7 Correct 6 ms 348 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 323 ms 22196 KB Output is correct
2 Correct 28 ms 2144 KB Output is correct
3 Correct 9 ms 992 KB Output is correct
4 Correct 327 ms 21172 KB Output is correct
5 Correct 108 ms 10944 KB Output is correct
6 Correct 17 ms 1500 KB Output is correct
7 Correct 2 ms 344 KB Output is correct