Submission #1110193

#	Time	Username	Problem	Language	Result	Execution time	Memory
1110193		vjudge1	Fish 3 (JOI24_fish3)	C++17	7 / 100	207 ms	58696 KiB

Main

#include<bits/stdc++.h>
#define fi first
#define se second
#define ll long long
#define pb push_back
using namespace std;
ll n,D,q,a[300005],du[300005],b[300005],f[300005];
ll minn[25][300005];
bool sub2=true;
int get(int l,int r)
{
	int k=__lg(r-l+1);
	return min(minn[k][l],minn[k][r-(1<<(k))+1]);
}
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
//	freopen(".INP","r",stdin);
//	freopen(".OUT","w",stdout);
	cin>>n>>D;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
		if(a[i]==1) b[i]=b[i-1]+1;
		else b[i]=0;
		f[i]=f[i-1]+a[i];
	}
	for(int i= 1;i<= n;i++)
		minn[0][i] = a[i];
	for(int j=1;j<= 20;j++)
	{
		for(int i= 1;i<= n - (1 << j) + 1;i++)
		minn[j][i] = min(minn[j - 1][i], minn[j - 1][i + (1 << (j - 1))]);
	}
	cin>>q;
	while(q--)
	{
		int l,r;
		cin>>l>>r;
		int d=l,c=r,vt=-1;
		while(d<=c)
		{
			int mid=(d+c)>> 1;
			if(get(mid,r))
			{
				vt=mid;
				c=mid-1;
			}
			else
				d=mid+1;
		}
		if(vt<0)
		{
			if(f[r] - f[l - 1] > 0)
			{
				if(D > 1)
					cout << "-1\n";
				else
					cout << f[r] - f[l - 1] << "\n";
			}
			else
				cout << "0\n";
		}
		else
		{
			int res = f[r] - f[l - 1] - (r - vt + 1);
			if(res > 0)
			{
				if(D > 1)
					cout << "-1\n";
				else
					cout << res << "\n";
			}
			else
				cout << res << "\n";
		}
	}
	return 0;
}

• Subtask 1: 0 / 9
• Subtask 2: 7 / 7
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36