Submission #883414

#	Time	Username	Problem	Language	Result	Execution time	Memory
883414		VN_AnhTuan	Ruka (COI15_ruka)	C++17	9 / 100	2074 ms	6792 KiB

ruka

//  Author : Nguyen Anh Tuan - THPT Chuyen Bac Giang - Train VOI 2023/2024

#include<bits/stdc++.h>
#define file(NAME) {freopen(NAME".inp", "r", stdin); freopen(NAME".out", "w", stdout);}
#define foru(i, a, b) for(int i=(a);i<=(b);i++)
#define ford(i, a, b) for(int i=(a);i>=(b);i--)
#define rep(i, n) for(int i=(1);i<=(n);i++)
#define fi first
#define se second
#define mp make_pair
#define SZ(v) ((int)((v).size()))
#define all(v) v.begin(),v.end()
#define RR(X) X.resize(unique(all(X)) - begin(X))

using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;

namespace IO
{
    #define getchar() (ipos==iend and (iend=(ipos=_ibuf)+fread(_ibuf,1,__bufsize,stdin),ipos==iend)?EOF:*ipos++)
    #define putchar(ch) (opos==oend?fwrite(_obuf,1,__bufsize,stdout),opos=_obuf:0,*opos++=(ch))
    #define __bufsize (1<<20)
    char _ibuf[__bufsize],_obuf[__bufsize],_stk[20];
    char *ipos=_ibuf,*iend=_ibuf,*opos=_obuf,*oend = _obuf+__bufsize,*stkpos = _stk;
    struct END{~END(){fwrite(_obuf,1,opos-_obuf,stdout);}}__;
    inline void read(int &x)
    {
        register ll f=0,ch;
        for(;!isdigit(ch);ch=getchar())if(ch=='-')f=1;
        for(x=0;isdigit(ch);ch=getchar())x=(x<<3ll)+(x<<1ll)+(ch^48);
        x=f?-x:x;
    }
    inline void write(int x)
    {
        if(x<0)putchar('-'),x=-x;
        while(*++stkpos=x%10^48,x/=10,x);
        while(stkpos!=_stk)putchar(*stkpos--);
    }
    inline void lread(ll&x)
    {
        register ll f=0,ch;
        for(;!isdigit(ch);ch=getchar())if(ch=='-')f=1;
        for(x=0;isdigit(ch);ch=getchar())x=(x<<3ll)+(x<<1ll)+(ch^48);
        x=f?-x:x;
    }
    inline void lwrite(ll x)
    {
        if(x<0)putchar('-'),x=-x;
        while(*++stkpos=x%10^48,x/=10,x);
        while(stkpos!=_stk)putchar(*stkpos--);
    }
};

void maximum(ll &a, ll b) {if(b > a) a = b;}
void minimum(ll &a, ll b) {if(b < a) a = b;}
bool bit(int x, int i) {return (x >> i) & 1;}

//-----------------------------------------------------------------------------------
//      END OF TEMPLATE
//-----------------------------------------------------------------------------------
//      Nguyen Anh Tuan - AnhTuan_BG
//      PRAY FOR VOI 2023
//-----------------------------------------------------------------------------------

const int maxn = 300005;
int n, q;
pii a[maxn];
struct type
{
    char c;
    int x, y;
} ques[maxn];

namespace sub1
{
    int cnt(pii a, pii b)
    {
        int ans = 0;
        if((a.fi > 0 && b.fi < 0) || (a.fi < 0 && b.fi > 0)) ans++;
        if((a.se > 0 && b.se < 0) || (a.se < 0 && b.se > 0)) ans++;
        return ans;
    }

    int Calc()
    {
        int ans = 0;
        pii Point = mp(1, 1);
        foru(i, 1, n)
        {
            pii newPoint = mp(Point.fi + a[i].fi, Point.se + a[i].se);
            ans = ans + cnt(Point, newPoint);
            Point = newPoint;
        }
        return ans;
    }

    void solve()
    {
        int idx = 1;

        foru(i, 1, q)
        {
            auto [c, x, y] = ques[i];
            if(c == 'B') idx = idx - (idx > 1);
            if(c == 'F') idx = idx + (idx < n);
            if(c == 'C') a[idx] = mp(x, y);
            if(c == 'Q') cout << Calc() << "\n";
        }
    }
}

int main()
{
    ios_base :: sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    //file("");

    cin >> n;
    foru(i, 1, n) cin >> a[i].fi >> a[i].se;
    cin >> q;
    foru(i, 1, q)
    {
        cin >> ques[i].c;
        if(ques[i].c == 'C') cin >> ques[i].x >> ques[i].y;
    }

    sub1 :: solve();

    return 0;
}

Compilation message (stderr)

ruka.cpp: In function 'void IO::read(int&)':
ruka.cpp:31:21: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   31 |         register ll f=0,ch;
      |                     ^
ruka.cpp:31:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   31 |         register ll f=0,ch;
      |                         ^~
ruka.cpp: In function 'void IO::lread(ll&)':
ruka.cpp:44:21: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   44 |         register ll f=0,ch;
      |                     ^
ruka.cpp:44:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   44 |         register ll f=0,ch;
      |                         ^~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 35
• Subtask 3: 0 / 56