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Submission #1051939

# Submission time Handle Problem Language Result Execution time Memory
1051939 2024-08-10T10:42:06 Z vjudge1 Divide and conquer (IZhO14_divide) C++17
17 / 100
 1 ms 6620 KB 
#include <bits/stdc++.h>
using namespace std;

#define SPEED ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define str string
#define pb push_back
#define pf push_front
#define nl "\n"
#define ll long long
#define int long long
#define all(v) (v).begin() , (v).end()
#define rall(v) (v).rbegin(), (v).rend()
#define ff first
#define ss second
#define len(a) a.size()
#define pii pair<int,int>
const int N = 3e6 + 1;
const ll md = 998244353;
const ll mod = 1e9 + 7;
const ll mega = 1e6 + 3;
const ll inf = 100100;
int x[N] , g[N] , d[N] , pref[N] , pref2[N] ,n , ans , mx;
void add(int l){
    ans += d[l];
}
void del(int l){
    ans -= d[l];
}
void solve() {
    cin >> n;
    for(int i = 1; i <= n; ++i){
        cin >> x[i] >> g[i] >> d[i];
        pref[i] = pref[i - 1] + d[i];
        pref2[i] = pref2[i - 1] + g[i];
    }
    int mx = 0;
    if(n <= 100){
        for(int i = 1; i <= n; ++i){
            for(int j = i; j <= n; ++j){
                if(x[j] - x[i] <= pref[j] - pref[i - 1]){
                    mx = max(mx , pref2[j] - pref2[i - 1]);
                }
            }
        }
        cout << mx;
    }
    else if(n <= 5000){
        for(int i = 1; i <= n; ++i){
            int l = i , r = n;
            while(l <= r){
                int m = (l + r) / 2;
                if(pref[m] - pref[i - 1] >= x[m] - x[i]){
                    l = m + 1;
                    mx = max(mx , pref2[m] - pref2[i - 1]);
                }
                else{
                    r = m - 1;
                }
            }
        }
        cout << mx;
    }
}
signed main() {
    SPEED;
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
    // #ifndef ONLINE_JUDGE
    // cerr << "\n" << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
    // #endif
    // return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 0 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6584 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6620 KB Output is correct
9 Correct 0 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6488 KB Output is correct

Subtask #2
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 0 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6584 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6620 KB Output is correct
9 Correct 0 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6488 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Incorrect 1 ms 6492 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 0 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6584 KB Output is correct
7 Correct 1 ms 6616 KB Output is correct
8 Correct 1 ms 6620 KB Output is correct
9 Correct 0 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6488 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Incorrect 1 ms 6492 KB Output isn't correct
16 Halted 0 ms 0 KB -