Submission #989693

#	Time	Username	Problem	Language	Result	Execution time	Memory
989693		diaabt	Fish 3 (JOI24_fish3)	C++14	100 / 100	365 ms	54612 KiB

Main

#include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define ll long long
#define ldb long double
#define db double
#define fin(x) freopen(x,"r",stdin)
#define fout(x) freopen(x,"w",stdout)
#define fo(i,l,r) for(int i=(l);i<=(r);i++)
#define foi(i,l,r) for(int i=(l);i>=(r);i--)
#define el cout<<'\n';
#define cel cerr<<'\n';
#define all(x) x.begin(),x.end()
#define ii pair<int,int>
#define iii pair<int,ii>
#define gb(x,i) (((x)>>(i))&1)
#define mask(i) (1LL<<(i))
#define TIME (1.0 * clock()/CLOCKS_PER_SEC)
using namespace std;
const int N=3e5+5;
const int bl=60;
const ll base=1e9+7;
const ll inf=1e9;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
ll Rand(ll l,ll r)
{
    return l+(1ll*rng()*rng()%(r-l+1)+(r-l+1))%(r-l+1);
}
template<class X,class Y>bool maximize(X &a,Y b)
{
    if(a<b) return a=b,true;
    return false;
}
template<class X,class Y>bool minimize(X &a, Y b)
{
    if(a>b) return a=b,true;
    return false;
}
void add(auto &a,auto b)
{
    a+=b;
    if(a>=base) a-=base;
    if(a<0) a+=base;
}
int n,q;
ll d,c[N],a[N],sum[N],ans[N];
stack<int>cc;
vector<ii>g[N];
ll st[4*N],lazy[4*N];
void push(int id,int l,int r,int mid)
{
    ll &x=lazy[id];
    if(!~x) return;
    st[id<<1]=1LL*x*(mid-l+1);
    st[id<<1|1]=1LL*x*(r-mid);
    lazy[id<<1]=lazy[id<<1|1]=x;
    x=-1;
}
void update(int id,int l,int r,int u,int v,ll val)
{
    if(r<u or l>v) return;
    if(u<=l and r<=v)
    {
        st[id]=1LL*(r-l+1)*val;
        lazy[id]=val;
        return;
    }
    int mid=(l+r)>>1;
    push(id,l,r,mid);
    update(id<<1,l,mid,u,v,val),update(id<<1|1,mid+1,r,u,v,val);
    st[id]=st[id<<1]+st[id<<1|1];
}
ll get(int id,int l,int r,int u,int v)
{
    if(r<u or l>v) return 0;
    if(u<=l and r<=v) return st[id];
    int mid=(l+r)>>1;
    push(id,l,r,mid);
    return get(id<<1,l,mid,u,v)+get(id<<1|1,mid+1,r,u,v);
}
int main()
{
    #define task "o"
    if(fopen(task".inp","r"))
    {
        fin(task".inp");
        //fout(task".out");
    }
    srand(time(NULL));
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n>>d;
    fo(i,1,n)
    {
        cin>>c[i];
        a[i]=a[i-1]+((c[i]-c[i-1]%d)%d+d)%d;
        sum[i]=sum[i-1]+c[i]-a[i];
    }
    cin>>q;
    fo(i,1,q)
    {
        int l,r;
        cin>>l>>r,g[r].pb({l,i});
    }
    memset(lazy,-1,sizeof(lazy));
    fo(i,1,n)
    {
        while(cc.size() and c[cc.top()]-a[cc.top()]>=c[i]-a[i]) cc.pop();
        int x=(cc.size()?cc.top()+1:1);
        update(1,1,n,x,i,c[i]-a[i]),cc.push(i);
        for(auto [l,id]:g[i])
        {
            if(get(1,1,n,l,l)+a[l]-c[l]%d<0) ans[id]=-1;
            else ans[id]=(sum[i]-sum[l-1]-get(1,1,n,l,i))/d;
        }
    }
    fo(i,1,q) cout<<ans[i],el
    cerr<<"Time elapsed: "<<TIME<<" s.\n";
}

Compilation message (stderr)

Main.cpp:41:10: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   41 | void add(auto &a,auto b)
      |          ^~~~
Main.cpp:41:18: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   41 | void add(auto &a,auto b)
      |                  ^~~~
Main.cpp: In function 'int main()':
Main.cpp:112:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  112 |         for(auto [l,id]:g[i])
      |                  ^
Main.cpp:9:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 | #define fin(x) freopen(x,"r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~
Main.cpp:88:9: note: in expansion of macro 'fin'
   88 |         fin(task".inp");
      |         ^~~

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