Submission #1112494

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112494		ljtunas	A Plus B (IOI23_aplusb)	C++17	100 / 100	53 ms	4576 KiB

aplusb

// author : anhtun_hi , nqg
#include <bits/stdc++.h>
#define ll long long
#define ii pair<ll, ll>
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define reset(h, v)    memset(h, v, sizeof h)
#define Forv(i, a)     for(auto& i : a)
#define For(i, a, b)   for(int i = a; i <= b; ++i)
#define Ford(i, a, b)  for(int i = a; i >= b; --i)
#define c_bit(i)     __builtin_popcountll(i)
#define Bit(mask, i)    ((mask >> i) & 1LL)
#define onbit(mask, i)  ((mask) bitor (1LL << i))
#define offbit(mask, i) ((mask) &~ (1LL << i))
using namespace std;
namespace std {
    template <typename T, int D>
    struct _vector : public vector <_vector <T, D - 1>> {
        static_assert(D >= 1, "Dimension must be positive!");
        template <typename... Args>
        _vector(int n = 0, Args... args) : vector <_vector <T, D - 1>> (n, _vector <T, D - 1> (args...)) {}
    };
    template <typename T> struct _vector <T, 1> : public vector <T> {
        _vector(int n = 0, const T& val = T()) : vector <T> (n, val) {}
    };
    template <class A, class B> bool minimize(A &a, B b){return a > b ? a = b, true : false;}
    template <class A, class B> bool maximize(A &a, B b){return a < b ? a = b, true : false;}
}
const int dx[] = {0, 0, +1, -1}, dy[] = {-1, +1, 0, 0}, LOG = 20, base = 311, inf = 1e9 + 5;
const int MAXN = 1e6 + 5;
const  ll  mod = 1e9 + 7;
const  ll   oo = 1e18;

//#define int long long

vector<int>  smallest_sums(int n, vector<int> a, vector<int> b){
    // cin >> n;
    // a.resize(n);
    // b.resize(n);
    // For(i, 0, n - 1) cin >> a[i];
    // For(i, 0, n - 1) cin >> b[i];

    int l = a[0] + b[0] - 1, r = a[n - 1] + b[n - 1] + 1;
    while(r - l > 1){
        int mid = l + r >> 1;
        int cnt = 0;
        For(i, 0, n - 1){
            cnt += upper_bound(all(b), mid - a[i]) - b.begin();
            if(cnt >= n) break;
        }
        if (cnt >= n) r = mid;
        else l = mid;
    }

    // cerr << l << '\n';

    vector<int> ans;
    For(i, 0, n - 1){
        int j = -1;
        while(j < n - 1 && a[i] + b[j + 1] <= r) ++j, ans.push_back(a[i] + b[j]);
    }
    // Forv(x, ans) cerr << x << ' ';
    sort(all(ans)), ans.resize(n);
    return ans;
} 

// int n; vector<int> a, b;

// void Solve() {
//     vector<int> List = 
//     smallest_sums(n, a, b);
//     Forv(x, List) cout << x << ' ';
// }

// int32_t main() {
//     cin.tie(0) -> sync_with_stdio(0);
//     if(fopen("a.inp", "r")) {
//         freopen("a.inp", "r", stdin);
//         freopen("a.out", "w", stdout);
//     }

//     int t = 1;
// //    cin >> t;

//     for (int test = 1; test <= t; test++) {
//         Solve();
//     }
//     return 0;
// }

Compilation message (stderr)

aplusb.cpp: In function 'std::vector<int> smallest_sums(int, std::vector<int>, std::vector<int>)':
aplusb.cpp:46:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   46 |         int mid = l + r >> 1;
      |                   ~~^~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 40 / 40