Submission #496105

# Submission time Handle Problem Language Result Execution time Memory
496105 2021-12-20T16:48:20 Z shmad Divide and conquer (IZhO14_divide) C++17
100 / 100
34 ms 6248 KB
#include <bits/stdc++.h>
 
#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
 
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvi = vt< vt<int> >;
 
const int N = 1e6 + 5, mod = 1e9 + 7, inf = 1e18 + 7, B = 500, LIM = (1ll << 25);
const double eps = 1e-6;
 
void solve () {
	int n;
	cin >> n;
	vt<int> x(n + 1, 0), g(n + 1, 0), d(n + 1, 0), p(n + 1, inf);
	for (int i = 1; i <= n; i++) cin >> x[i] >> g[i] >> d[i], g[i] += g[i - 1], d[i] += d[i - 1], p[i] = min(p[i - 1], d[i - 1] - x[i]);
	int ans = 0;
	for (int i = 1; i <= n; i++) {
		int l = 1, r = i;
		while (l <= r) {
			int mid = l + r >> 1;
			if (p[mid] <= d[i] - x[i]) r = mid - 1;
			else l = mid + 1;
		}
		ans = max(ans, g[i] - g[r]);
	}
	cout << ans;
	cout << '\n';
}
 
bool testcases = 0;
 
signed main() {
    cin.tie(0) -> sync_with_stdio(0);
    int test = 1;
    if (testcases) cin >> test;
    for (int cs = 1; cs <= test; cs++) {
        solve();
    }
}

Compilation message

divide.cpp: In function 'void solve()':
divide.cpp:29:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |    int mid = l + r >> 1;
      |              ~~^~~
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 312 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 312 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 3 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 312 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 3 ms 460 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 3 ms 588 KB Output is correct
27 Correct 5 ms 588 KB Output is correct
28 Correct 15 ms 1868 KB Output is correct
29 Correct 15 ms 3144 KB Output is correct
30 Correct 33 ms 6248 KB Output is correct
31 Correct 27 ms 5176 KB Output is correct
32 Correct 27 ms 5192 KB Output is correct
33 Correct 27 ms 5056 KB Output is correct
34 Correct 30 ms 4976 KB Output is correct
35 Correct 31 ms 5484 KB Output is correct
36 Correct 34 ms 5696 KB Output is correct