Submission #1110172

#	Time	Username	Problem	Language	Result	Execution time	Memory
1110172		vjudge1	Fish 3 (JOI24_fish3)	C++17	9 / 100	2047 ms	8780 KiB

Main

#include <bits/stdc++.h>
#define Y8o "Fish"
#define maxn (int) 3e5 + 5
#define ll long long
#define pii pair<int, int>
#define gb(i, j) ((i >> j) & 1)
#define all(x) x.begin(), x.end()
#define _left id * 2, l, mid
#define _right id * 2 + 1, mid + 1, r
#define fi(i, a, b) for(int i = a; i <= b; i ++)
#define fid(i, a, b) for(int i = a; i >= b; i --)

#define f first
#define s second

using namespace std;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll GetRandom(ll l, ll r) {
    return uniform_int_distribution<ll> (l, r) (rng);
}
void iof() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL), cout.tie(NULL);
    if(fopen(Y8o".inp", "r"))
    {
        freopen(Y8o".inp", "r", stdin);
//        freopen(Y8o".out", "w", stdout);
    }
}
void ctime() {
    cerr << "\n" << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
}

int n, Q; ll D;
ll a[maxn];
pii qr[maxn];

namespace sub1 {

    void solve() {
        fi(i, 1, Q) {
            int l = qr[i].f, r = qr[i].s, notok = 0;
            ll mi = 1e18, ans = 0;

            fid(j, r, l) {
                mi = min(mi, a[j]);
                if(a[j] - mi != 0) {
                    ll du = a[j] % D, du2 = mi % D;
                    mi = mi - (du2 - du + D) % D;
//                    while(mi >= 0) {
//                        if((a[j] - mi) % D == 0) break;
//                        mi --;
//                    }
                    ans += (a[j] - mi) / D;
                }
                if(mi < 0) { notok = 1; break; }
            }
            cout << (notok ? -1 : ans) << '\n';
        }
    }

}
void solve() {
    cin >> n >> D;
    fi(i, 1, n) cin >> a[i] ;
    cin >> Q ;
    fi(i, 1, Q) cin >> qr[i].f >> qr[i].s;

    if(n <= 3000) return sub1::solve(), void();

}


int main() {
    iof();

    int nTest = 1;
//    cin >> nTest;

    while(nTest --) {
        solve();
    }

    ctime();
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void iof()':
Main.cpp:27:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |         freopen(Y8o".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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