oj.uz

Submission #1046135

# Submission time Handle Problem Language Result Execution time Memory
1046135 2024-08-06T10:25:44 Z c2zi6 Sprinklers (CEOI24_sprinklers) C++14
3 / 100
 32 ms 3164 KB 
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<VPI> VVPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<VL> VVL;
typedef vector<VVL> VVVL;
typedef vector<VPL> VVPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T>
using indset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef vector<char> VC;
typedef vector<VC> VVC;
typedef vector<bool> VB;
typedef vector<VB> VVB;
 
void solve() {
    int n, m;
    cin >> n >> m;
    VI a(n);
    /* jur */
    VI b(m);
    /* caxik */
    for (int& x : a) cin >> x;
    for (int& x : b) cin >> x;
    
    string ans(n, '_');
    auto can = [&](ll d) {
        int j = 0;
        // verjin chjrac caxik@
        rep(i, n) {
            if (b[j] < a[i] - d) return false;

            if (b[j] < a[i]) {
                // a[i]-n pti dzax naye
                ans[i] = 'L';
                while (j < m && b[j] <= a[i]) j++;
            } else {
                // a[i]-n pti aj naye
                ans[i] = 'R';
                while (j < m && b[j] <= a[i]+d) j++;
            }
            if (j == m) break;
        }
        return j == m;
    };

    ll l = 0, r = 2e9;
    while (l + 1 < r) {
        ll m = (l + r) / 2;
        if (can(m)) r = m;
        else l = m;
    }
    if (r == 2e9) cout << -1 << endl;
    else {
        can(r);
        cout << r << endl;
        cout << ans << endl;
    }
}
 
int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL), cout.tie(NULL);
	/*freopen("mincross.in", "r", stdin); */
	/*freopen("test.out", "w", stdout); */
	int t = 1;
	/*cin >> t; */
	while (t--) solve();
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 0 ms 344 KB Correct

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 5 ms 600 KB Correct
3 Correct 0 ms 344 KB Correct
4 Correct 7 ms 856 KB Correct
5 Correct 6 ms 600 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 1 ms 344 KB Correct
9 Correct 0 ms 344 KB Correct

Subtask #2
0.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Incorrect 7 ms 860 KB Invalid character in the string
3 Halted 0 ms 0 KB -

Subtask #3
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 0 ms 344 KB Correct
3 Correct 0 ms 344 KB Correct
4 Correct 0 ms 348 KB Correct
5 Incorrect 0 ms 348 KB User solution is worse than jury's solution
6 Halted 0 ms 0 KB -

Subtask #4
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 10 ms 860 KB Correct
3 Incorrect 32 ms 3164 KB Invalid character in the string
4 Halted 0 ms 0 KB -

Subtask #5
0.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 0 ms 344 KB Correct
3 Correct 5 ms 600 KB Correct
4 Correct 0 ms 344 KB Correct
5 Correct 7 ms 856 KB Correct
6 Correct 6 ms 600 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 0 ms 348 KB Correct
9 Correct 1 ms 344 KB Correct
10 Correct 0 ms 344 KB Correct
11 Incorrect 7 ms 860 KB Invalid character in the string
12 Halted 0 ms 0 KB -