Submission #1110169

#	Time	Username	Problem	Language	Result	Execution time	Memory
1110169		vjudge1	Fish 3 (JOI24_fish3)	C++98	9 / 100	23 ms	2700 KiB

Main

#include <bits/stdc++.h>
using namespace std;

int n,q;
long long c[300005];
long long d;


int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> d;
    for(int i=0;i<n;i++)
    {
        cin >> c[i];
    }
    cin >> q;
    if(n<=3000&&q<=3000)
    {
        for(int i=0;i<q;i++)
        {
            int l,r;
            cin >> l >> r;
            r--;l--;
            long long cnt=0;
            long long af=c[r];
            bool cw=true;
            for(int i=r-1;i>=l;i--)
            {
                if(c[i]>af)
                {
                    long long sl=(c[i]-af)/d+((c[i]-af)%d>0);
                    cnt+=sl;
                    af=c[i]-sl*d;
                    if(af<0)
                    {
                        cw=false;
                        break;
                    }
                }
                else af=c[i];
            }
            if(cw==true) cout << cnt << '\n';
            else cout << -1 << '\n';
        }
    }
    return 0;
}

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