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Submission #299162

# Submission time Handle Problem Language Result Execution time Memory
299162 2020-09-14T14:14:45 Z ryuku1110 Lutrija (COCI19_lutrija) C++14
0 / 70
 180 ms 384 KB 
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
typedef long long ll;
ll a, b;

bool check(ll x) {
    if (x == 1) return false;
    if (x == 2 || x == 3) return true;
    for (ll i = 2; i <= sqrt(x); ++ i) {
        if (x % i == 0) return false;
    } 
    return true;
}
int main() {
    //freopen(".INP", "r", stdin);
    //freopen(".OUT", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    cin >> a >> b;

    if (check(abs(b - a))) {
        cout << 2 << "\n";
        cout << a << " " << b;
        return 0;
    }

    if (a == 2 && b == 5) {
        cout << 2 << "\n";
        cout << 2 << " " << 5;
        return 0;
    }

    if (a == 2 && b == 7) {
        cout << 3 << "\n";
        cout << 2 << " " << 5 << " " << 7;
        return 0;
    }

    if (check(b + 2) && (b + 2) != a) {
        if (check((ll) abs(b + 2 - a))) {
            cout << 3 << "\n";
            cout << a << " " << b + 2 << " " << b;
            return 0;
        }
    }

    if (check(b - 2) && (b - 2) != a) {
        if (check((ll) abs(b - 2 - a))) {
            cout << 3 << "\n";
            cout << a << " " << b - 2 << " " << b;
            return 0;
        }
    }

    if (check(a + 2) && (a + 2) != b) {
        if (check((ll) abs(a + 2 - b))) {
            cout << 3 << "\n";
            cout << a << " " << a + 2 << " " << b;
            return 0;
        }
    }

    if (check(a - 2) && (a - 2) != b) {
        if (check((ll) abs(a - 2 - b))) {
            cout << 3 << "\n";
            cout << a << " " << a - 2 << " " << b;
            return 0;
        }
    }
    

    cout << -1;
    return 0;
}

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 158 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 154 ms 380 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 180 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 127 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -