Submission #1277865

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277865		sasde	Self Study (JOI22_ho_t2)	C++20	100 / 100	117 ms	2800 KiB

Main

#include<bits/stdc++.h>
using namespace std;
bool M1;
#define PI 3.14159265358979323846
#define sz(a) (int)a.size()
#define all(x) x.begin(),x.end()
#define ii pair<int,int>
#define iii pair<int,ii>
#define iv pair<ii,ii>
#define se second
#define fi first
#define ffi fi.fi
#define sfi se.fi
#define sse se.se
#define fse fi.se
#define lt(i, c, d) for(int i = c; i <= d; ++i)
#define fl(i, c, d) for(int i = d; i >= c; --i)
#define pb push_back
#define emb emplace_back
#define emf emplace_front
#define em emplace
#define look_memory cerr<<abs(&M2-&M1)/1024.0/1024<<'\n'
#define look_time   cerr << "TIME : " << clock() * 0.001 << "s" <<'\n'
const int N=1e6+5,lg=30,mod=1e9+7;
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int u,int v){
 return u+rd()%(v-u+1);
}
int dx[]={1,0,-1,0,1,1,-1,-1};
int dy[]={0,-1,0,1,1,-1,1,-1};
int node,m,a[N],b[N];
bool check(long long mid){
    long long val=1LL*node*m;
    for(int i=1;i<=node;++i){
        long long x=min(1LL*m,(mid+a[i]-1)/a[i]);
        long long y=mid-x*a[i];
        val-=x;
        if(y>0){
          long long z=(y+b[i]-1)/b[i];
          if(z>val)return false;
          val-=z;
        }
    }
    return val>=0;
}
bool M2;
void solve(){
    cin >> node >> m;
    for(int i=1;i<=node;++i){
        cin >> a[i];
    }
    for(int i=1;i<=node;++i){
        cin >> b[i];
        a[i]=max(a[i],b[i]);
    }
    long long l=0,r=1e18,res=0;
    while(l<=r){
        long long mid=(r+l)>>1;
        if(check(mid)){
            res=mid;
            l=mid+1;
        }
        else r=mid-1;
    }
    cout <<res;
}
main()
{
  srand(time(0));
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    #define task "aws"
    if(fopen(task".inp","r")){
      freopen(task".inp","r",stdin);
      freopen(task".out","w",stdout);
    }
    int t=1;
 //   cin >> t;
while(t--){
    solve();cout<<'\n';
}
look_memory;
look_time;
}

Compilation message (stderr)

Main.cpp:67:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   67 | main()
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:75:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |       freopen(task".inp","r",stdin);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:76:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |       freopen(task".out","w",stdout);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29
• Subtask 5: 9 / 9