oj.uz

Submission #55144

# Submission time Handle Problem Language Result Execution time Memory
55144 2018-07-06T06:24:18 Z khsoo01(#2065) None (JOI14_ho_t3) C++11
20 / 100
 17 ms 748 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N = 100005, inf = 1e12;

ll n, a[2*N], nxt[N];

bool can (ll V) {
	for(ll S=0, E=-1, X=0; S < n;) {
		if(X >= V || E - S >= n) {
			nxt[S] = E+1;
			X -= a[S];
			S++;
		}
		else {
			E++;
			X += a[E];
		}
	}
	for(ll i=0;i<n;i++) {
		ll C = i, l = 0;
		for(ll j=0;j<3;j++) {
			l += nxt[C] - C;
			C = nxt[C] % n;
		}
		if(l <= n) return true;
	}
	return false;
}

int main()
{
	scanf("%lld",&n);
	for(ll i=0;i<n;i++) {
		scanf("%lld",&a[i]);
		a[i+n] = a[i];
	}
	ll S = 0, E = inf;
	while(S<E) {
		ll M = (S+E)/2+1;
		can(M) ? S = M : E = M-1;
	}
	printf("%lld\n",S);
}

Compilation message

2014_ho_t3.cpp: In function 'int main()':
2014_ho_t3.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&n);
  ~~~~~^~~~~~~~~~~
2014_ho_t3.cpp:35:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld",&a[i]);
   ~~~~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 3 ms 560 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 2 ms 560 KB Output is correct
7 Correct 2 ms 560 KB Output is correct
8 Correct 2 ms 576 KB Output is correct
9 Correct 2 ms 576 KB Output is correct
10 Correct 2 ms 576 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 3 ms 560 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 2 ms 560 KB Output is correct
7 Correct 2 ms 560 KB Output is correct
8 Correct 2 ms 576 KB Output is correct
9 Correct 2 ms 576 KB Output is correct
10 Correct 2 ms 576 KB Output is correct
11 Correct 3 ms 576 KB Output is correct
12 Correct 3 ms 616 KB Output is correct
13 Correct 4 ms 616 KB Output is correct
14 Correct 2 ms 616 KB Output is correct
15 Correct 3 ms 616 KB Output is correct
16 Correct 3 ms 616 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 3 ms 560 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 2 ms 560 KB Output is correct
7 Correct 2 ms 560 KB Output is correct
8 Correct 2 ms 576 KB Output is correct
9 Correct 2 ms 576 KB Output is correct
10 Correct 2 ms 576 KB Output is correct
11 Correct 3 ms 576 KB Output is correct
12 Correct 3 ms 616 KB Output is correct
13 Correct 4 ms 616 KB Output is correct
14 Correct 2 ms 616 KB Output is correct
15 Correct 3 ms 616 KB Output is correct
16 Correct 3 ms 616 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 14 ms 748 KB Output is correct
22 Correct 14 ms 748 KB Output is correct
23 Correct 15 ms 748 KB Output is correct
24 Correct 12 ms 748 KB Output is correct
25 Correct 17 ms 748 KB Output is correct
26 Incorrect 8 ms 748 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #4
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 3 ms 560 KB Output is correct
5 Correct 2 ms 560 KB Output is correct
6 Correct 2 ms 560 KB Output is correct
7 Correct 2 ms 560 KB Output is correct
8 Correct 2 ms 576 KB Output is correct
9 Correct 2 ms 576 KB Output is correct
10 Correct 2 ms 576 KB Output is correct
11 Correct 3 ms 576 KB Output is correct
12 Correct 3 ms 616 KB Output is correct
13 Correct 4 ms 616 KB Output is correct
14 Correct 2 ms 616 KB Output is correct
15 Correct 3 ms 616 KB Output is correct
16 Correct 3 ms 616 KB Output is correct
17 Correct 2 ms 620 KB Output is correct
18 Correct 2 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 14 ms 748 KB Output is correct
22 Correct 14 ms 748 KB Output is correct
23 Correct 15 ms 748 KB Output is correct
24 Correct 12 ms 748 KB Output is correct
25 Correct 17 ms 748 KB Output is correct
26 Incorrect 8 ms 748 KB Output isn't correct
27 Halted 0 ms 0 KB -