Submission #278076

# Submission time Handle Problem Language Result Execution time Memory
278076 2020-08-21T09:48:16 Z erkam Xylophone (JOI18_xylophone) C++17
100 / 100
105 ms 676 KB
#include "xylophone.h"
#include<bits/stdc++.h>
#define endl "\n"
#define all(v) v.begin(),v.end()
#define st first
#define nd second
#define mp make_pair
#define pb push_back
using namespace std;
typedef long long lo;
const int mod=1000000007,N=500005;
lo a,b,c,d,e,f,g=1,h[N];
pair<lo,lo>arr[N];
string s;
vector<lo>v;

// int query(int a,int b){ }
// void answer(int a,int b){ }

void solve(int n){
	for(lo i=1;i<n;i++){
		arr[i].st=query(i,i+1);
		if(i<n-1)arr[i].nd=query(i,i+2);
	}
	h[1]=1;
	for(lo i=1;i<=n-2;i++){
		if(arr[i].st+arr[i+1].st==arr[i].nd)h[i+1]=h[i];
		else h[i+1]=(h[i]^1);
	}
	lo sum=0;
	pair<lo,lo>mx={0,1},mn={0,1};
	for(lo i=1;i<n;i++){
		if(h[i]==0)sum-=arr[i].st;
		else sum+=arr[i].st;
		if(mx.st<sum)mx={sum,i+1};
		if(mn.st>sum)mn={sum,i+1};
	}
	if(mx.nd>mn.nd){
		lo hehe=n-mx.st;
		answer(1,hehe);
		for(lo i=1;i<n;i++){
			hehe+=arr[i].st*(h[i]==0?-1:1);
			answer(i+1,hehe);
		}
		return;
	}
	h[1]=0;
	sum=0;
	lo mxi=0;
	for(lo i=1;i<=n-2;i++){
		if(arr[i].st+arr[i+1].st==arr[i].nd)h[i+1]=h[i];
		else h[i+1]=(h[i]^1);
	}
	for(lo i=1;i<n;i++){
		if(h[i]==0)sum-=arr[i].st;
		else sum+=arr[i].st;
		mxi=max(sum,mxi);
	}
	lo hehe=n-mxi;
	answer(1,hehe);
	for(lo i=1;i<n;i++){
		hehe+=arr[i].st*(h[i]==0?-1:1);
		answer(i+1,hehe);
	}

}
 
// int main(){
// 	#ifdef local
// 		freopen("in.txt","r",stdin);
// 		freopen("out.txt","w",stdout);
// 	#endif
// 	ios_base::sync_with_stdio(false);
// 	cin.tie(NULL); cout.tie(NULL);
// 	// cin >> g;
// 	// while(g--)solve();
// }
# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 1 ms 376 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 1 ms 376 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 10 ms 384 KB Output is correct
18 Correct 12 ms 504 KB Output is correct
19 Correct 21 ms 384 KB Output is correct
20 Correct 17 ms 384 KB Output is correct
21 Correct 22 ms 384 KB Output is correct
22 Correct 17 ms 384 KB Output is correct
23 Correct 22 ms 376 KB Output is correct
24 Correct 15 ms 380 KB Output is correct
25 Correct 22 ms 412 KB Output is correct
26 Correct 16 ms 384 KB Output is correct
27 Correct 13 ms 504 KB Output is correct
28 Correct 16 ms 384 KB Output is correct
29 Correct 17 ms 384 KB Output is correct
30 Correct 17 ms 504 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 1 ms 376 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 10 ms 384 KB Output is correct
18 Correct 12 ms 504 KB Output is correct
19 Correct 21 ms 384 KB Output is correct
20 Correct 17 ms 384 KB Output is correct
21 Correct 22 ms 384 KB Output is correct
22 Correct 17 ms 384 KB Output is correct
23 Correct 22 ms 376 KB Output is correct
24 Correct 15 ms 380 KB Output is correct
25 Correct 22 ms 412 KB Output is correct
26 Correct 16 ms 384 KB Output is correct
27 Correct 13 ms 504 KB Output is correct
28 Correct 16 ms 384 KB Output is correct
29 Correct 17 ms 384 KB Output is correct
30 Correct 17 ms 504 KB Output is correct
31 Correct 43 ms 380 KB Output is correct
32 Correct 57 ms 384 KB Output is correct
33 Correct 65 ms 504 KB Output is correct
34 Correct 86 ms 504 KB Output is correct
35 Correct 105 ms 504 KB Output is correct
36 Correct 91 ms 500 KB Output is correct
37 Correct 91 ms 504 KB Output is correct
38 Correct 98 ms 504 KB Output is correct
39 Correct 94 ms 504 KB Output is correct
40 Correct 99 ms 504 KB Output is correct
41 Correct 97 ms 676 KB Output is correct
42 Correct 95 ms 504 KB Output is correct
43 Correct 92 ms 504 KB Output is correct
44 Correct 91 ms 504 KB Output is correct
45 Correct 93 ms 508 KB Output is correct
46 Correct 102 ms 504 KB Output is correct
47 Correct 77 ms 676 KB Output is correct
48 Correct 100 ms 504 KB Output is correct
49 Correct 103 ms 504 KB Output is correct
50 Correct 92 ms 528 KB Output is correct
51 Correct 99 ms 504 KB Output is correct
52 Correct 95 ms 436 KB Output is correct
53 Correct 88 ms 504 KB Output is correct
54 Correct 89 ms 508 KB Output is correct
55 Correct 99 ms 504 KB Output is correct
56 Correct 94 ms 504 KB Output is correct
57 Correct 63 ms 524 KB Output is correct
58 Correct 93 ms 504 KB Output is correct
59 Correct 88 ms 524 KB Output is correct
60 Correct 98 ms 508 KB Output is correct