代码

#include <stdint.h>
#include <sys/auxv.h>
#include <unistd.h>

struct DuckInfo {
  uint64_t abi_version;
  const char *stdin_ptr; uint64_t stdin_size;
  char *stdout_ptr; uint64_t stdout_limit; uint64_t stdout_size;
  char *stderr_ptr; uint64_t stderr_limit; uint64_t stderr_size;
  const char *IB_ptr; uint64_t IB_limit;
  char *OB_ptr; uint64_t OB_limit;
  uint64_t tsc_frequency;
} __attribute__((packed));

#define SZ (1<<20)
#define MASK 0x3FFFFFFFu

static uint32_t limb[SZ];
static uint8_t  st[2*SZ];   /* 0 = all-zero, 1 = all-full, 2 = mixed */

static const char *P;
static uint64_t O;

static inline uint8_t comb(uint8_t a, uint8_t b){ return (a == b) ? a : 2; }

/* ---- iterative point ops (hot path) ---- */

static inline int padd(int q, uint32_t v){
    int idx = SZ + q;
    int anc[20];
    int na = 0;
    for (int x = idx >> 1; x >= 1; x >>= 1) anc[na++] = x;
    /* push top-down */
    for (int i = na - 1; i >= 0; i--){
        int node = anc[i];
        uint8_t s = st[node];
        if (s != 2){ st[node<<1] = s; st[node<<1|1] = s; }
    }
    uint8_t ls = st[idx];
    uint32_t cur = (ls == 0) ? 0u : (ls == 1) ? MASK : limb[q];
    uint32_t nv = cur + v;
    int carry = nv >> 30;
    uint32_t n30 = nv & MASK;
    limb[q] = n30;
    st[idx] = (n30 == 0) ? 0 : (n30 == MASK) ? 1 : 2;
    for (int i = 0; i < na; i++){
        int node = anc[i];
        uint8_t a = st[node<<1], b = st[node<<1|1];
        uint8_t c = (a == b) ? a : 2;
        if (c == st[node]) break;
        st[node] = c;
    }
    return carry;
}

static inline int psub(int q, uint32_t v){
    int idx = SZ + q;
    int anc[20];
    int na = 0;
    for (int x = idx >> 1; x >= 1; x >>= 1) anc[na++] = x;
    for (int i = na - 1; i >= 0; i--){
        int node = anc[i];
        uint8_t s = st[node];
        if (s != 2){ st[node<<1] = s; st[node<<1|1] = s; }
    }
    uint8_t ls = st[idx];
    uint32_t cur = (ls == 0) ? 0u : (ls == 1) ? MASK : limb[q];
    int32_t nv = (int32_t)cur - (int32_t)v;
    int borrow = nv < 0;
    uint32_t res = borrow ? (uint32_t)(nv + (1<<30)) : (uint32_t)nv;
    limb[q] = res;
    st[idx] = (res == 0) ? 0 : (res == MASK) ? 1 : 2;
    for (int i = 0; i < na; i++){
        int node = anc[i];
        uint8_t a = st[node<<1], b = st[node<<1|1];
        uint8_t c = (a == b) ? a : 2;
        if (c == st[node]) break;
        st[node] = c;
    }
    return borrow;
}

/* ---- read-only find / range (cold path) ---- */

static int find_nf(int node, int nl, int nr, int j){
    if (nr <= j) return -1;
    uint8_t s = st[node];
    if (s == 1) return -1;
    if (nr - nl == 1) return nl;
    if (s == 0) return (j > nl) ? j : nl;
    int mid = (nl + nr) >> 1;
    int r = find_nf(node<<1, nl, mid, j);
    if (r != -1) return r;
    return find_nf(node<<1|1, mid, nr, j);
}

static int find_nz(int node, int nl, int nr, int j){
    if (nr <= j) return -1;
    uint8_t s = st[node];
    if (s == 0) return -1;
    if (nr - nl == 1) return nl;
    if (s == 1) return (j > nl) ? j : nl;
    int mid = (nl + nr) >> 1;
    int r = find_nz(node<<1, nl, mid, j);
    if (r != -1) return r;
    return find_nz(node<<1|1, mid, nr, j);
}

static void range_zero(int node, int nl, int nr, int l, int r){
    if (nr <= l || r <= nl) return;
    if (l <= nl && nr <= r){ st[node] = 0; return; }
    uint8_t s = st[node];
    if (s != 2){ st[node<<1] = s; st[node<<1|1] = s; }
    int mid = (nl + nr) >> 1;
    range_zero(node<<1, nl, mid, l, r);
    range_zero(node<<1|1, mid, nr, l, r);
    st[node] = comb(st[node<<1], st[node<<1|1]);
}

static void range_full(int node, int nl, int nr, int l, int r){
    if (nr <= l || r <= nl) return;
    if (l <= nl && nr <= r){ st[node] = 1; return; }
    uint8_t s = st[node];
    if (s != 2){ st[node<<1] = s; st[node<<1|1] = s; }
    int mid = (nl + nr) >> 1;
    range_full(node<<1, nl, mid, l, r);
    range_full(node<<1|1, mid, nr, l, r);
    st[node] = comb(st[node<<1], st[node<<1|1]);
}

static inline void add_val(int q, int r, uint32_t a){
    uint32_t lo = (uint32_t)((uint64_t)a << r) & MASK;
    uint32_t hi = (r == 0) ? 0u : (uint32_t)(a >> (30 - r));
    int c0 = padd(q, lo);
    int c1 = padd(q + 1, hi + c0);
    if (c1){
        int p = find_nf(1, 0, SZ, q + 2);
        if (p > q + 2) range_zero(1, 0, SZ, q + 2, p);
        padd(p, 1);
    }
}

static inline void sub_val(int q, int r, uint32_t a){
    uint32_t lo = (uint32_t)((uint64_t)a << r) & MASK;
    uint32_t hi = (r == 0) ? 0u : (uint32_t)(a >> (30 - r));
    int b0 = psub(q, lo);
    int b1 = psub(q + 1, hi + b0);
    if (b1){
        int p = find_nz(1, 0, SZ, q + 2);
        if (p > q + 2) range_full(1, 0, SZ, q + 2, p);
        psub(p, 1);
    }
}

static inline uint32_t read_limb(int q){
    int node = 1, nl = 0, nr = SZ;
    while (nr - nl > 1){
        uint8_t s = st[node];
        if (s == 0) return 0;
        if (s == 1) return MASK;
        int mid = (nl + nr) >> 1;
        if (q < mid){ node = node<<1; nr = mid; }
        else { node = node<<1|1; nl = mid; }
    }
    uint8_t s = st[node];
    if (s == 0) return 0;
    if (s == 1) return MASK;
    return limb[q];
}

/* ---- parse ---- */

static inline int rd(){
    while (*P <= ' ') P++;
    int v = 0;
    while (*P > ' ') v = v*10 + (*P - '0'), P++;
    return v;
}

__attribute__((noreturn)) static void done(uint64_t olen, struct DuckInfo *di, char *out, int use_di){
    if (use_di) di->stdout_size = olen;
    else (void)!write(1, out, olen);
    asm volatile("mov $60, %%eax; xor %%edi, %%edi; syscall" ::: "rax","rdi","memory");
    __builtin_unreachable();
}

int main(){
    struct DuckInfo *di = (struct DuckInfo*)getauxval(0x6b637564);
    static char lbuf[1<<24];
    static char obuf[1<<22];
    char *out;
    int use_di = 0;
    if (di && di->abi_version >= 1 && di->stdin_ptr && di->stdout_ptr){
        P = di->stdin_ptr;
        out = di->stdout_ptr;
        use_di = 1;
    } else {
        long n2 = 0, t;
        while (n2 < (long)sizeof(lbuf) && (t = read(0, lbuf + n2, sizeof(lbuf) - n2)) > 0) n2 += t;
        lbuf[n2] = 0;
        P = lbuf;
        out = obuf;
    }

    int n = rd();
    rd(); rd(); rd();
    P++;

    for (int i = 0; i < n; i++){
        int op = *P++ - '0';
        P++;
        if (op == 1){
            int neg = 0;
            if (*P == '-'){ neg = 1; P++; }
            int a = 0;
            while (*P > ' '){ a = a*10 + (*P - '0'); P++; }
            P++;
            int b = 0;
            while (*P > ' '){ b = b*10 + (*P - '0'); P++; }
            P++;
            int q = b / 30;
            int r = b % 30;
            if (neg) sub_val(q, r, (uint32_t)a);
            else if (a) add_val(q, r, (uint32_t)a);
        } else {
            int k = 0;
            while (*P > ' '){ k = k*10 + (*P - '0'); P++; }
            P++;
            int q = k / 30;
            int r = k % 30;
            uint32_t v = read_limb(q);
            out[O++] = (char)('0' + ((v >> r) & 1));
            out[O++] = '\n';
        }
    }
    done(O, di, out, use_di);
}

评测结果