oj.uz

Submission #621058

# Submission time Handle Problem Language Result Execution time Memory
621058 2022-08-03T11:36:15 Z prarie Sure Bet (CEOI17_sure) C++14
100 / 100
 67 ms 3612 KB 
#include <bits/stdc++.h>
 
#define fastio ios_base::sync_with_stdio(0), cin.tie(0)
#define endl '\n'
#define fi first
#define se second
#define sz(v) (int)(v).size()
#define all(v) (v).begin(), (v).end()
#define compress(v) sort(all(v)), (v).erase(unique(all((v))), v.end())
#define pb push_back
#define eb emplace_back
 
using namespace std;
 
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using ld = long double;
 
template <typename T>
inline void Mx(T &x, T y) { x < y && (x = y); }
template <typename T>
inline void Mn(T &x, T y) { x > y && (x = y); }


int main() {
	int N;
	scanf("%d", &N);

	vector<double> A(N), B(N);
	for (int i = 0; i < N; i++) {
		scanf("%lf %lf", &A[i], &B[i]);
	}

	sort(all(A));
	reverse(all(A));
	sort(all(B));
	reverse(all(B));

	double ans = 0;
	double Asum = 0, Bsum = 0;
	int Aptr = 0, Bptr = 0;
	for (int x = 1; x <= 2 * N; x++) {
		if (Aptr == N) {
			Bsum += B[Bptr++];
		} else if (Bptr == N) {
			Asum += A[Aptr++];
		} else {
			if (Asum == Bsum) {
				if (A[Aptr] < B[Bptr]) {
					Bsum += B[Bptr++];
				} else {
					Asum += A[Aptr++];
				}	
			} else if (Asum > Bsum) {
				Bsum += B[Bptr++];
			} else {
				Asum += A[Aptr++];
			}
		}

		ans = max(ans, min(Asum, Bsum) - x);
	}

	printf("%.4lf", ans);
	return 0;
}

Compilation message

sure.cpp: In function 'int main()':
sure.cpp:28:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |  scanf("%d", &N);
      |  ~~~~~^~~~~~~~~~
sure.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   scanf("%lf %lf", &A[i], &B[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 300 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 2 ms 212 KB Output is correct
16 Correct 1 ms 308 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 300 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 2 ms 212 KB Output is correct
16 Correct 1 ms 308 KB Output is correct
17 Correct 61 ms 3120 KB Output is correct
18 Correct 61 ms 3148 KB Output is correct
19 Correct 59 ms 3252 KB Output is correct
20 Correct 57 ms 3268 KB Output is correct
21 Correct 63 ms 3612 KB Output is correct
22 Correct 59 ms 3232 KB Output is correct
23 Correct 64 ms 3232 KB Output is correct
24 Correct 59 ms 3128 KB Output is correct
25 Correct 66 ms 3240 KB Output is correct
26 Correct 67 ms 3520 KB Output is correct