oj.uz

Submission #1028353

# Submission time Handle Problem Language Result Execution time Memory
1028353 2024-07-19T17:13:56 Z vjudge1 Sure Bet (CEOI17_sure) C++17
100 / 100
 71 ms 5460 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#pragma GCC target("popcnt")
#define endl '\n'
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define fo(i,n) for(auto i =0 ; i < n;i++)
#define fore(i,l,r) for(auto i = l; i < r;i++)
#define forex(i,r,l) for(auto i = r; i >= l; i--)
#define ffo(i,n) forex(i,n-1,0)
#define all(x) x.begin(),x.end()
#define lsb(x) x&(-x)
#define sz(x) (int)x.size()
#define gcd(a,b) __gcd(a,b)
#define vii vector<ii>
#define pq_min(a) priority_queue<a, vector<a>, greater<a>>
#define fls cout.flush()
using namespace std;
using ll = long long;
using ull = unsigned long long;
using vi = vector<int>;
using ii = pair<int,int>;
using mii = map<int,int>;
using lld = long double;
void valid(ll in){cout<<((in)?"YES\n":"NO\n");}
void test_case(){
    int n;
    cin >> n;
    lld a[n]{}, b[n]{};
    fo(i,n)cin >> a[i] >> b[i];
    sort(a,a+n);
    sort(b,b+n);
    lld ans = 0;
    lld sa = 0;
    lld sb = 0, best = 0;
    int l = 0;
    for(int i = 0; i <= n; i++){
        if(i)sa += a[n-i];
        // fijamos min en sb
        while(l<n&&sb+b[n-l-1]<=sa){
            sb+=b[n-l-1],l++;
            best = sb - l;
        }
        ans = max(ans, best - i);
        if(l<n-1){
            ans = max(ans, sa - i - l - 1);
        }
    }
    cout << ans << endl;
}
int main(){cin.tie(0)->sync_with_stdio(0);
    cout<<setprecision(4)<<fixed;
    int t=1;
    // cin >> t;
    while(t--)test_case();
}

Compilation message

sure.cpp:4: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    4 | #pragma GCC optimization ("O3")
      | 
sure.cpp:5: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    5 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 456 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 456 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 61 ms 4696 KB Output is correct
18 Correct 57 ms 4688 KB Output is correct
19 Correct 63 ms 4836 KB Output is correct
20 Correct 62 ms 4688 KB Output is correct
21 Correct 67 ms 5204 KB Output is correct
22 Correct 62 ms 4944 KB Output is correct
23 Correct 63 ms 4848 KB Output is correct
24 Correct 63 ms 4692 KB Output is correct
25 Correct 63 ms 4692 KB Output is correct
26 Correct 71 ms 5460 KB Output is correct