Submission #348428

#	Time	Username	Problem	Language	Result	Execution time	Memory
348428		duality	Ruka (COI15_ruka)	C++11	100 / 100	109 ms	5356 KiB

ruka

#define DEBUG 1

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

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------

int diff(int a,int b) {
    return (a > 0) != (b > 0);
}
int x[100000],y[100000];
int a[100001],b[100001];
int bita[10000000],bitb[10000000];
int update(int i,int num,int *bit) {
    for (i += 5000000; i < 10000000; i += i & (-i)) bit[i] += num;
    return 0;
}
int query(int i,int *bit) {
    int sum = 0;
    for (i += 5000000; i > 0; i -= i & (-i)) sum += bit[i];
    return sum;
}
int main() {
    int i;
    int N,M;
    char c;
    int nx,ny;
    int u = 0,ans = 0,adda = 0,addb = 0;
    scanf("%d",&N);
    a[0] = b[0] = 1;
    for (i = 0; i < N; i++) scanf("%d %d",&x[i],&y[i]),a[i+1] = a[i]+x[i],b[i+1] = b[i]+y[i];
    ans += diff(a[0],a[1])+diff(b[0],b[1]);
    for (i = 1; i < N; i++) {
        update(min(a[i],a[i+1]),1,bita),update(max(a[i],a[i+1])+1,-1,bita);
        update(min(b[i],b[i+1]),1,bitb),update(max(b[i],b[i+1])+1,-1,bitb);
    }
    scanf("%d",&M);
    for (i = 0; i < M; i++) {
        scanf(" %c",&c);
        if (c == 'B') {
            if (u == 0) continue;
            ans -= diff(a[u],a[u+1]+adda)+diff(b[u],b[u+1]+addb);
            a[u] -= adda,b[u] -= addb;
            update(min(a[u],a[u+1]),1,bita),update(max(a[u],a[u+1])+1,-1,bita);
            update(min(b[u],b[u+1]),1,bitb),update(max(b[u],b[u+1])+1,-1,bitb);
            u--;
        }
        else if (c == 'F') {
            if (u == N-1) continue;
            u++;
            update(min(a[u],a[u+1]),-1,bita),update(max(a[u],a[u+1])+1,1,bita);
            update(min(b[u],b[u+1]),-1,bitb),update(max(b[u],b[u+1])+1,1,bitb);
            a[u] += adda,b[u] += addb;
            ans += diff(a[u],a[u+1]+adda)+diff(b[u],b[u+1]+addb);
        }
        else if (c == 'C') {
            scanf("%d %d",&nx,&ny);
            ans -= diff(a[u],a[u+1]+adda)+diff(b[u],b[u+1]+addb);
            adda += nx-x[u],addb += ny-y[u];
            ans += diff(a[u],a[u+1]+adda)+diff(b[u],b[u+1]+addb);
            x[u] = nx,y[u] = ny;
        }
        else printf("%d\n",ans+query(-adda,bita)+query(-addb,bitb));
        /*printArr(a,N+1);
        printArr(b,N+1);
        printVar(adda);
        printVar(addb);
        printVar(ans);*/
    }

    return 0;
}

Compilation message (stderr)

ruka.cpp: In function 'int main()':
ruka.cpp:79:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   79 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~
ruka.cpp:81:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   81 |     for (i = 0; i < N; i++) scanf("%d %d",&x[i],&y[i]),a[i+1] = a[i]+x[i],b[i+1] = b[i]+y[i];
      |                             ~~~~~^~~~~~~~~~~~~~~~~~~~~
ruka.cpp:87:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   87 |     scanf("%d",&M);
      |     ~~~~~^~~~~~~~~
ruka.cpp:89:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   89 |         scanf(" %c",&c);
      |         ~~~~~^~~~~~~~~~
ruka.cpp:107:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  107 |             scanf("%d %d",&nx,&ny);
      |             ~~~~~^~~~~~~~~~~~~~~~~

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