Submission #1103714

#	Time	Username	Problem	Language	Result	Execution time	Memory
1103714		sitablechair	Fish 3 (JOI24_fish3)	C++17	9 / 100	2074 ms	7612 KiB

Main

#include <bits/stdc++.h>

#define ll long long
#define ldb long double
#define endl '\n'
#define For(i,l,r) for(int i=l;i<=r;i++)
#define ForD(i,r,l) for(int i=r;i>=l;i--)
#define REP(i,l,r) For(i,l,r-1)
#define PER(i,r,l) ForD(i,r-1,l)
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
#define All(x,n) x+1,x+1+n
#define Alll(x,n) x,x+n
#define sz(x) (signed)x.size()
#define unq(x) x.resize(unique(all(x))-x.begin())
#define mpa make_pair

#ifdef NCGM
#include"debug.h"
#else 
#define debug(...) "fr";
#endif

using namespace std;

const int N=3e5+3;

int n,q;
ll d,c[N];

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> d;
    For(i,1,n) cin >> c[i];
    cin >> q;
    while(q--) {
        int l,r;
        cin >> l >> r;
        ll ans=0,cur=c[r];
        ForD(k,r-1,l) {
            if (c[k]<=cur) {
                cur=c[k];
                continue;
            }
            ll sus=(c[k]-cur)/d;
            while (c[k]-sus*d>cur) sus++;
            ans+=sus;
            cur=c[k]-sus*d;
        }
        if (cur>=0) cout << ans << endl;
        else cout << -1 << endl;
    }
    return 0;
}

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