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Submission #638796

# Submission time Handle Problem Language Result Execution time Memory
638796 2022-09-07T13:54:29 Z HossamHero7 Ice Hockey World Championship (CEOI15_bobek) C++14
80 / 100
 1000 ms 77292 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
#define endl '\n'
struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};
void solve(){
    ll n,m;
    cin>>n>>m;
    vector<ll> v(n);
    for(auto &i:v) cin>>i;
    unordered_map<ll,int,custom_hash> frq;
    for(int mask=0;mask<(1<<n/2);mask++){
        ll sum = 0;
        for(int i=0;i<(n>>1);i++){
            if((1<<i)&mask){
                sum += v[i];
            }
        }
        frq[sum] ++;
    }
    int prev = 0;
    vector<ll> tmp;
    for(auto &i : frq){
        tmp.push_back(i.first);
    }
    sort(tmp.begin(),tmp.end());
    for(auto i : tmp){
        frq[i] += prev;
        prev = frq[i];
    }
    int rem = n-(n>>1);
    ll ans = 0;
    for(int mask=0;mask<(1<<rem);mask++){
        ll sum = 0;
        for(int i=0;i<rem;i++){
            if((1<<i)&mask){
                sum += v[(n>>1)+i];
            }
        }
        if(sum > m) continue;
        int upper = upper_bound(tmp.begin(),tmp.end(),m-sum) - tmp.begin();
        upper --;
        ans += frq[tmp[upper]];
    }
    cout<<ans<<endl;
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);      cout.tie(0);
    solve();
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 288 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 212 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 1236 KB Output is correct
2 Correct 206 ms 12660 KB Output is correct
3 Execution timed out 1051 ms 35120 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 1748 KB Output is correct
2 Correct 43 ms 4172 KB Output is correct
3 Correct 123 ms 1000 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 6 ms 212 KB Output is correct
6 Correct 18 ms 2352 KB Output is correct
7 Correct 38 ms 5052 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 123 ms 8468 KB Output is correct
2 Correct 226 ms 9492 KB Output is correct
3 Correct 222 ms 9508 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 63 ms 212 KB Output is correct
6 Correct 183 ms 1720 KB Output is correct
7 Correct 202 ms 19444 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 992 ms 38704 KB Output is correct
2 Correct 46 ms 5092 KB Output is correct
3 Correct 19 ms 2480 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 5 ms 212 KB Output is correct
6 Correct 490 ms 38680 KB Output is correct
7 Correct 29 ms 5016 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 5044 KB Output is correct
2 Correct 264 ms 19388 KB Output is correct
3 Correct 15 ms 2480 KB Output is correct
4 Correct 17 ms 2480 KB Output is correct
5 Correct 68 ms 324 KB Output is correct
6 Correct 38 ms 5168 KB Output is correct
7 Correct 983 ms 77292 KB Output is correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1103 ms 77284 KB Time limit exceeded
2 Halted 0 ms 0 KB -