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Submission #66048

# Submission time Handle Problem Language Result Execution time Memory
66048 2018-08-09T13:07:13 Z bazsi700 Ice Hockey World Championship (CEOI15_bobek) C++14
40 / 100
 1000 ms 64268 KB 
#include <bits/stdc++.h>

using namespace std;
#define ll long long

//14:20
int n;
ll m;
ll c[45];
ll way[1050000];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> m;
    for(int i = 0; i < n; i++) {
        cin >> c[i];
    }
    if(n <= 21) {
        ll ways = 0;
        for(int mask = 0; mask < (1<<n); mask++) {
            ll money = m;
            for(int i = 0; i < n; i++) {
                if(mask&(1<<i)) {
                    money-= c[i];
                }
            }
            if(money >= 0) {
                ways++;
            }
        }
        cout << ways;
    } else {
        ll ways = 0;
        vector<ll> did;
        unordered_map<ll,int> compr;
        for(int mask = 0; mask < (1<<20); mask++) {
            ll money = m;
            for(int i = 0; i < 20; i++) {
                if(mask&(1<<i)) {
                    money-= c[i];
                }
            }
            if(money >= 0) {
                did.push_back(m-money);
            }
        }
        sort(did.begin(),did.end());
        int in = 1;
        for(ll el : did) {
            compr[el] = in++;
        }
        int b1 = 21;
        for(int mask = 0; mask < (1<<b1); mask++) {
            ll money = m;
            for(int i = 0; i < b1; i++) {
                if(mask&(1<<i)) {
                    money-= c[i];
                }
            }
            if(money >= 0) {
                way[compr[(m-money)]]++;
            }
        }
        for(int i = 1; i <= in; i++) {
            way[i]+=way[i-1];
        }
        for(int mask = 0; mask < (1<<(n-b1)); mask++) {
            ll money = m;
            for(int i = b1; i < n; i++) {
                if(mask&(1<<(i-b1))) {
                    money-= c[i];
                }
            }
            if(money >= 0) {
                auto it = upper_bound(did.begin(),did.end(),money);
                if(it != did.begin()) {
                    it--;
                    ways+= way[compr[*it]];
                }
            }
        }
        cout << ways;
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 488 KB Output is correct
2 Correct 2 ms 564 KB Output is correct
3 Correct 2 ms 564 KB Output is correct
4 Correct 3 ms 564 KB Output is correct
5 Correct 3 ms 564 KB Output is correct
6 Correct 3 ms 564 KB Output is correct
7 Correct 3 ms 564 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 564 KB Output is correct
2 Correct 8 ms 564 KB Output is correct
3 Correct 12 ms 640 KB Output is correct
4 Correct 2 ms 640 KB Output is correct
5 Correct 7 ms 640 KB Output is correct
6 Correct 93 ms 640 KB Output is correct
7 Correct 12 ms 640 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 712 KB Output is correct
2 Correct 23 ms 712 KB Output is correct
3 Correct 9 ms 712 KB Output is correct
4 Correct 7 ms 712 KB Output is correct
5 Correct 91 ms 712 KB Output is correct
6 Correct 11 ms 712 KB Output is correct
7 Correct 11 ms 712 KB Output is correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 463 ms 17820 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 520 ms 18372 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1073 ms 32132 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1080 ms 63836 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1069 ms 64104 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1075 ms 64268 KB Time limit exceeded
2 Halted 0 ms 0 KB -