Submission #1121337

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121337		modwwe	허수아비 (JOI14_scarecrows)	C++17	100 / 100	378 ms	108212 KiB

scarecrows

#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC optimize("conserve-stack")
#include<bits/stdc++.h>
#define int  long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)
#define pb push_back
#define mask(k) (1<<k)
#define mp make_pair
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
}
void phongbeo();
const int inf = 2e9;
const ll mod2 = 1e9 + 7;
const int  mod1 = 998244353;
const ll base=67;
int dx[4] = {1, -1, 0, 0};
int dy[4] = {0, 0, 1, -1};
int add(int x,int y)
{
    if(x+y>=mod2) x-=mod2;
    if(x+y<0)x+=mod2;
    return x+y;
}
struct icd
{
    long double a;
    int b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a, b, c;
};
struct id
{
    int a, b, c, d;
};
struct ie
{
    int a, b, c, d, e;

};
int n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, mid, l2, r2, center;
int  i, s10, s12,k1,k2,k3,s11,lim,w,l,r ;
int kk;
int el = 19;
main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        fou(task);
    }
    NHP
    /// cin>>s1;
    // modwwe
    phongbeo();
    // checktime
}
bool cmp(ic a,ic  b)
{
    return a.b<b.b;
}
bool cmp2(ib a,ib b)
{
    return a.a>b.a;
}
vector<ib> t[800001];
ic a[200001];
vector<ib> v;
int pos[200001];
void upd(int node,int l,int r,int l1,ib x)
{
    while(!t[node].empty()&&t[node].back().b>x.b) t[node].pop_back();
    t[node].pb(x);
    if(l==r) return;
    int mid=l+r>>1;
    if(l1<=mid)upd(node<<1,l,mid,l1,x);
    else upd(node<<1|1,mid+1,r,l1,x);
}
void get(int node,int l,int r,int l1,int r1)
{
    if(l>r1||r<l1) return;
    if(l>=l1&&r<=r1)
    {
        l=1;
        r=t[node].size();
        k=t[node].size();
        while(l<=r)
        {
            int mid=l+r>>1;
            if(t[node][k-mid].a>=s5)r=mid-1;
            else l=mid+1;
        }
        s4=s4+r;
        if(!t[node].empty())
            s5=min(s5,t[node].back().a);
        return;
    }
    int mid=l+r>>1;
    get(node<<1,l,mid,l1,r1);
    get(node<<1|1,mid+1,r,l1,r1);
}
void phongbeo()
{
    cin>>n;
    for(int i=1; i<=n; i++)
        cin>>a[i].a>>a[i].b,a[i].c=i,v.pb({a[i].a,a[i].c});
    sort(a+1,a+1+n,cmp);
    for(int i=1; i<=n; i++) pos[a[i].c]=i;
    sort(v.begin(),v.end(),cmp2);
    for(auto [x,y]:v)
    {
        y=pos[y];
        s5=inf;
        get(1,1,n,y,n);
        upd(1,1,n,y, {x,y});
        /// chen cai be nhat vao => con nao nam ben phai se ko dc dung nx
    }
    cout<<s4;
}

Compilation message (stderr)

scarecrows.cpp:77:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   77 | main()
      | ^~~~
scarecrows.cpp: In function 'void upd(long long int, long long int, long long int, long long int, ib)':
scarecrows.cpp:107:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  107 |     int mid=l+r>>1;
      |             ~^~
scarecrows.cpp: In function 'void get(long long int, long long int, long long int, long long int, long long int)':
scarecrows.cpp:121:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  121 |             int mid=l+r>>1;
      |                     ~^~
scarecrows.cpp:130:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  130 |     int mid=l+r>>1;
      |             ~^~
scarecrows.cpp: In function 'int main()':
scarecrows.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
scarecrows.cpp:81:9: note: in expansion of macro 'fin'
   81 |         fin(task);
      |         ^~~
scarecrows.cpp:14:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 | #define fou(x) freopen(x".out","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
scarecrows.cpp:82:9: note: in expansion of macro 'fou'
   82 |         fou(task);
      |         ^~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 85 / 85