oj.uz

Submission #61660

# Submission time Handle Problem Language Result Execution time Memory
61660 2018-07-26T09:49:49 Z cki86201 Candies (JOI18_candies) C++11
100 / 100
 275 ms 9460 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <math.h>
#include <assert.h>
#include <queue>
#include <map>
#include <set>
#include <string>
#include <algorithm>
#include <iostream>
#include <functional>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <bitset>

using namespace std;
typedef long long ll;
#define Fi first
#define Se second
#define pb(x) push_back(x)
#define szz(x) ((int)(x).size())
#define rep(i, n) for(int i=0;i<n;i++)
#define all(x) (x).begin(), (x).end()
typedef tuple<int, int, int> t3;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef long double ldouble;

int N;
ll A[200020];
int nxt[200020], pre[200020], chk[200020];

int main() {
	scanf("%d", &N);
	for(int i=1;i<=N;i++) scanf("%lld", A+i);
	for(int i=1;i<=N+1;i++) pre[i] = i-1;
	for(int i=0;i<=N;i++) nxt[i] = i+1;
	nxt[N+1] = pre[0] = -1;
	A[0] = A[N+1] = -1e18;
	priority_queue <pll> pq; ll ans = 0;
	for(int i=1;i<=N;i++) pq.push(pll(A[i], i));
	for(int i=1;i<=(N+1)/2;i++) {
		pll t = pq.top(); pq.pop();
		if(chk[t.Se]) { --i; continue; }
		ans += t.Fi;
		int idx = (int)t.Se;
		int pr = pre[idx];
		int nx = nxt[idx];
		chk[pr] = chk[nx] = 1;
		A[idx] = -A[idx] + A[pr] + A[nx];
		pq.push(pll(A[idx], idx));
		nxt[idx] = nxt[nx];
		if(nxt[nx] != -1) pre[nxt[nx]] = idx;
		pre[idx] = pre[pr];
		if(pre[pr] != -1) nxt[pre[pr]] = idx;
		printf("%lld\n", ans);
	}
	return 0;
}

Compilation message

candies.cpp: In function 'int main()':
candies.cpp:37:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
candies.cpp:38:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=N;i++) scanf("%lld", A+i);
                        ~~~~~^~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 504 KB Output is correct
2 Correct 5 ms 632 KB Output is correct
3 Correct 4 ms 664 KB Output is correct
4 Correct 4 ms 664 KB Output is correct
5 Correct 4 ms 700 KB Output is correct
6 Correct 4 ms 700 KB Output is correct
7 Correct 4 ms 700 KB Output is correct
8 Correct 3 ms 700 KB Output is correct
9 Correct 4 ms 700 KB Output is correct
10 Correct 5 ms 736 KB Output is correct
11 Correct 3 ms 736 KB Output is correct
12 Correct 3 ms 736 KB Output is correct
13 Correct 4 ms 800 KB Output is correct
14 Correct 4 ms 800 KB Output is correct
15 Correct 4 ms 800 KB Output is correct
16 Correct 5 ms 800 KB Output is correct
17 Correct 4 ms 800 KB Output is correct
18 Correct 3 ms 800 KB Output is correct
19 Correct 5 ms 800 KB Output is correct
20 Correct 4 ms 800 KB Output is correct

Subtask #2
92.0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 504 KB Output is correct
2 Correct 5 ms 632 KB Output is correct
3 Correct 4 ms 664 KB Output is correct
4 Correct 4 ms 664 KB Output is correct
5 Correct 4 ms 700 KB Output is correct
6 Correct 4 ms 700 KB Output is correct
7 Correct 4 ms 700 KB Output is correct
8 Correct 3 ms 700 KB Output is correct
9 Correct 4 ms 700 KB Output is correct
10 Correct 5 ms 736 KB Output is correct
11 Correct 3 ms 736 KB Output is correct
12 Correct 3 ms 736 KB Output is correct
13 Correct 4 ms 800 KB Output is correct
14 Correct 4 ms 800 KB Output is correct
15 Correct 4 ms 800 KB Output is correct
16 Correct 5 ms 800 KB Output is correct
17 Correct 4 ms 800 KB Output is correct
18 Correct 3 ms 800 KB Output is correct
19 Correct 5 ms 800 KB Output is correct
20 Correct 4 ms 800 KB Output is correct
21 Correct 221 ms 9328 KB Output is correct
22 Correct 230 ms 9328 KB Output is correct
23 Correct 239 ms 9392 KB Output is correct
24 Correct 141 ms 9460 KB Output is correct
25 Correct 175 ms 9460 KB Output is correct
26 Correct 221 ms 9460 KB Output is correct
27 Correct 163 ms 9460 KB Output is correct
28 Correct 211 ms 9460 KB Output is correct
29 Correct 173 ms 9460 KB Output is correct
30 Correct 232 ms 9460 KB Output is correct
31 Correct 172 ms 9460 KB Output is correct
32 Correct 240 ms 9460 KB Output is correct
33 Correct 195 ms 9460 KB Output is correct
34 Correct 207 ms 9460 KB Output is correct
35 Correct 238 ms 9460 KB Output is correct
36 Correct 260 ms 9460 KB Output is correct
37 Correct 205 ms 9460 KB Output is correct
38 Correct 221 ms 9460 KB Output is correct
39 Correct 199 ms 9460 KB Output is correct
40 Correct 134 ms 9460 KB Output is correct
41 Correct 164 ms 9460 KB Output is correct
42 Correct 227 ms 9460 KB Output is correct
43 Correct 275 ms 9460 KB Output is correct
44 Correct 234 ms 9460 KB Output is correct
45 Correct 250 ms 9460 KB Output is correct
46 Correct 241 ms 9460 KB Output is correct
47 Correct 202 ms 9460 KB Output is correct
48 Correct 194 ms 9460 KB Output is correct
49 Correct 262 ms 9460 KB Output is correct
50 Correct 204 ms 9460 KB Output is correct