Submission #947471

#	Time	Username	Problem	Language	Result	Execution time	Memory
947471		vjudge1	Arcade (NOI20_arcade)	C++17	100 / 100	144 ms	26328 KiB

Arcade

//------------------------------------\\
//   ------------------------------   \\
//  |  created by Dinh Manh Hung   |  \\
//  |      tht.onepunchac168       |  \\
//  |     THPT CHUYEN HA TINH      |  \\
//  |      HA TINH, VIET NAM       |  \\
//  |           Siuuu              |  \\
//   ------------------------------   \\
//------------------------------------\\

#include <bits/stdc++.h>
using namespace std;

#define            task     ""
#define       file(name)    if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
#define             ldb     long double
#define              pb     push_back
#define              eb     emplace_back
#define              fi     first
#define              se     second
#define           all(x)    begin(x),end(x)
#define       uniquev(v)    v.resize(unique(all(v))-v.begin())
#define       rep(i,a,b)    for (int i=a;i<=b;i++)
#define        cntbit(v)    __builtin_popcountll(v)
#define         gcd(a,b)    __gcd(a,b)
#define         lcm(a,b)    ((1LL*a*b)/__gcd(a,b))
#define          mask(x)    (1LL<<(x))
#define     readbit(x,i)    ((x>>i)&1)
#define             Yes     cout << "Yes"
#define             YES     cout << "YES"
#define              No     cout << "No"
#define              NO     cout << "NO"

typedef long long ll;
typedef pair <ll,ll> ii;
typedef pair <ll,ii> iii;
typedef pair <ii,ii> iiii;

ll dx[]= {1,-1,0,0,1,-1,1,-1};
ll dy[]= {0,0,-1,1,1,-1,-1,1};

const ldb PI = acos (-1);
//const ll mod=978846151;
//const ll base=29;
const ll mod=1e9+7;
const char nl = '\n';

inline int ReadInt()
{
    char co;
    for (co = getchar(); co < '0' || co > '9'; co = getchar());
    int xo = co - '0';
    for (co = getchar(); co >= '0' && co <= '9'; co = getchar())
        xo = (xo<<1) + (xo<<3) + co - '0';
    return xo;
}

void WriteInt(int xo)
{
    if (xo > 9)
        WriteInt(xo / 10);
    putchar(xo % 10 + '0');
}

// DEBUG
/*
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}


#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
*/

/* END OF TEMPLATE*/

// ================= Solution =================//


void onepunchac168();

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    file(task);
    int tests;
    tests=1;
    //cin>>tests;
    while (tests--)
    {
        onepunchac168();
    }
}

const int N=5e5+5;
ll n,m;
ll a[N],t[N];
ii x[N];
ll pos[N];
bool cmp(ii u,ii v)
{
    if (u.fi==v.fi)
    {
        return u.se>v.se;
    }
    return u.fi>v.fi;
}
void onepunchac168()
{
    cin>>n>>m;
    for (int i=1;i<=m;i++)
    {
        cin>>t[i];
    }
    for (int i=1;i<=m;i++)
    {
        cin>>a[i];
    }
    for (int i=1;i<=m;i++)
    {
        int id=i;
        x[i].fi=a[id]+t[id];
        x[i].se=t[id]-a[id];
    }
    sort (x+1,x+m+1,cmp);
    vector <ll> ans;
    for (int i=1;i<=m;i++)
    {
        if (ans.empty())
        {
            ans.pb(x[i].se);
        }
        else
        {
            if (ans.back()<x[i].se)
            {
                ans.pb(x[i].se);
            }
            else
            {
                ll aa=lower_bound(ans.begin(),ans.end(),x[i].se)-ans.begin();
                ans[aa]=x[i].se;
            }
        }
    }
    cout<<ans.size();
}
// goodbye see ya

Compilation message (stderr)

Arcade.cpp:1:1: warning: multi-line comment [-Wcomment]
    1 | //------------------------------------\\
      | ^
Arcade.cpp: In function 'int main()':
Arcade.cpp:15:66: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 | #define       file(name)    if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Arcade.cpp:108:5: note: in expansion of macro 'file'
  108 |     file(task);
      |     ^~~~
Arcade.cpp:15:99: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 | #define       file(name)    if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                                                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Arcade.cpp:108:5: note: in expansion of macro 'file'
  108 |     file(task);
      |     ^~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 14 / 14
• Subtask 6: 20 / 20
• Subtask 7: 15 / 15