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Submission #794029

# Submission time Handle Problem Language Result Execution time Memory
794029 2023-07-26T08:52:26 Z 곰(#10095) Triangle Collection (CCO23_day2problem3) C++17
25 / 25
 192 ms 11428 KB 
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.1,sse4.2,popcnt,abm,mmx,avx,avx2,fma")
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
using ll=long long;
using pll=array<ll,2>;
const ll inf=1e18;
const int N=2e5+5;
int n,q;
ll a[N],cnt[N],sum;
struct ST{
	ll T[2*N]={0},S[2*N]={0};
	void upd(int nd,int l,int r,int x,int v){
		if(l==r){
			S[nd]+=v;
			T[nd]=min(0ll,S[nd]);
			return;
		}
		int m=(l+r)>>1,ln=nd+1,rn=nd+2*(m-l+1);
		if(x<=m) upd(ln,l,m,x,v);
		else upd(rn,m+1,r,x,v);
		T[nd]=min(T[ln],S[ln]+T[rn]);
		S[nd]=S[ln]+S[rn];
	}
}T;
int main(){
	ios::sync_with_stdio(false); cin.tie(0);
	cin>>n>>q;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		sum+=a[i]/2;
		T.upd(1,1,n,i,a[i]%2);
		T.upd(1,1,n,min(n,2*i-1),-(a[i]/2));
	}
	for(int i,c,t=1;t<=q;t++){
		cin>>i>>c;
		sum-=a[i]/2;
		T.upd(1,1,n,i,-(a[i]%2));
		T.upd(1,1,n,min(n,2*i-1),(a[i]/2));
		a[i]+=c;
		sum+=a[i]/2;
		T.upd(1,1,n,i,(a[i]%2));
		T.upd(1,1,n,min(n,2*i-1),-(a[i]/2));
		if(T.T[1]>=0) cout<<sum<<"\n";
		else cout<<sum-(-T.T[1]+2)/3<<"\n";
	}
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 42 ms 672 KB Output is correct
4 Correct 162 ms 9388 KB Output is correct
5 Correct 164 ms 9512 KB Output is correct
6 Correct 161 ms 9472 KB Output is correct
7 Correct 155 ms 9420 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 154 ms 9624 KB Output is correct
6 Correct 178 ms 11332 KB Output is correct
7 Correct 176 ms 11340 KB Output is correct
8 Correct 174 ms 11428 KB Output is correct
9 Correct 178 ms 11308 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 42 ms 672 KB Output is correct
32 Correct 162 ms 9388 KB Output is correct
33 Correct 164 ms 9512 KB Output is correct
34 Correct 161 ms 9472 KB Output is correct
35 Correct 155 ms 9420 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 2 ms 340 KB Output is correct
38 Correct 2 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 154 ms 9624 KB Output is correct
41 Correct 178 ms 11332 KB Output is correct
42 Correct 176 ms 11340 KB Output is correct
43 Correct 174 ms 11428 KB Output is correct
44 Correct 178 ms 11308 KB Output is correct
45 Correct 192 ms 11372 KB Output is correct
46 Correct 168 ms 11340 KB Output is correct
47 Correct 177 ms 11340 KB Output is correct
48 Correct 161 ms 9588 KB Output is correct
49 Correct 170 ms 11356 KB Output is correct
50 Correct 160 ms 10044 KB Output is correct
51 Correct 124 ms 10088 KB Output is correct
52 Correct 175 ms 11412 KB Output is correct
53 Correct 119 ms 9496 KB Output is correct
54 Correct 153 ms 9540 KB Output is correct