Submission #880737

#	Time	Username	Problem	Language	Result	Execution time	Memory
880737		cpptowin	Just Long Neckties (JOI20_ho_t1)	C++17	100 / 100	88 ms	34896 KiB

ho_t1

#include<bits/stdc++.h>
#define fo(i,d,c) for(int i=d;i<=c;i++)
#define fod(i,c,d) for(int i=c;i>=d;i--)
#define maxn 1000010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout<<"\n";
#define int long long
#define inf 1000000000
#define pii pair<int,int>
#define vii vector<pii>
#define lb(x) x&-x
#define bit(i,j) ((i>>j)&1)
#define offbit(i,j) (i^(1<<j))
#define onbit(i,j) (i|(1<<j))
#define vi vector<int>
template <typename T1, typename T2> bool minimize(T1 &a, T2 b){if (a > b) {a = b; return true;} return false;}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b){if (a < b) {a = b; return true;} return false;}
using namespace std;
int n;
int max1[maxn],max2[maxn],nxt[maxn],val[maxn];
int a[maxn],b[maxn];
pii arr[maxn];
int pos[maxn];
main()
{
    #define name "TASK"
    if(fopen(name".inp","r"))
    {
       freopen(name".inp","r",stdin);
       freopen(name".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    cin >> n;
    fo(i,1,n + 1) cin >> a[i],arr[i] = {a[i],i};
    fo(i,1,n) cin >> b[i];
    sort(a + 1,a + n + 2);
    sort(arr + 1,arr + n + 2);
    fo(i,1,n + 1) pos[arr[i].se] = i;
    sort(b + 1,b + n + 1);
    // fo(i,1,n + 1) cout << a[i] << "\n";
    // cout << "xxxxxxxxxxxxxxx";en;
    // fo(i,1,n) cout << b[i] << "\n";
    fo(i,1,n)
    {
        nxt[i] = max(a[i + 1] - b[i],0LL);
        val[i] = max(a[i] - b[i],0LL);
    }
    fo(i,1,n)
    {
        max1[i] = max(max1[i - 1],val[i]);
    }
    fod(i,n,1)
    {
        max2[i] = max(max2[i + 1],nxt[i]);
    }
    fo(i,1,n + 1)
    {
        int id = pos[i];
        cout << max(max1[id - 1],max2[id]) << ' ';
    }
}

Compilation message (stderr)

ho_t1.cpp:27:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   27 | main()
      | ^~~~
ho_t1.cpp: In function 'int main()':
ho_t1.cpp:32:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |        freopen(name".inp","r",stdin);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
ho_t1.cpp:33:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |        freopen(name".out","w",stdout);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 8 / 8
• Subtask 3: 91 / 91