Submission #818208

#	Time	Username	Problem	Language	Result	Execution time	Memory
818208		becaido	Bit Shift Registers (IOI21_registers)	C++17	23 / 100	1 ms	656 KiB

registers

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include <bits/stdc++.h>
using namespace std;

#ifndef WAIMAI
#include "registers.h"
#endif

#ifdef WAIMAI
#define debug(HEHE...) cout << "[" << #HEHE << "] : ", dout(HEHE)
void dout() {cout << '\n';}
template<typename T, typename...U>
void dout(T t, U...u) {cout << t << (sizeof...(u) ? ", " : ""), dout(u...);}
#else
#define debug(...) 7122
#endif

#define ll long long
#define Waimai ios::sync_with_stdio(false), cin.tie(0)
#define FOR(x,a,b) for (int x = a, I = b; x <= I; x++)
#define pb emplace_back
#define F first
#define S second

#ifdef WAIMAI
void append_move(int t, int x);
void append_store(int t, vector<bool> v);
void append_and(int t, int x, int y);
void append_or(int t, int x, int y);
void append_xor(int t, int x, int y);
void append_not(int t, int x);
void append_left(int t, int x, int s);
void append_right(int t, int x, int s);
void append_add(int t, int x, int y);
void append_print(int t);
#endif

// 0 : numbers
// 1 : all one
// 2 : cur min
// 3 : cur cmp
// 4 : one
// 5 : -(cur cmp)

const int M = 100;
const int B = 2000;

const int NUMS = 0;
const int ALL1 = 1;
const int CMIN = 2;
const int CCMP = 3;
const int ONE1 = 4;
const int NCMP = 5;
const int BALL = 6;
const int NBAL = 7;
const int MASK = 8;
const int CXOR = 9;

void append_set(int t, int x, int l, int r, int lp = 0) {
    append_left(t, x, B - 1 - r);
    append_right(t, t, B - 1 + l - r + lp);
}
void append_reset(int t, int l, int r) {
    vector<bool> mask(B, 1);
    FOR (i, l, r) mask[i] = 0;
    append_store(MASK, mask);
    append_and(t, t, MASK);
}
void append_min(int k) {
    append_not(NCMP, CCMP);
    append_add(NCMP, NCMP, ONE1);
    append_add(NCMP, NCMP, CMIN);
    append_set(BALL, NCMP, k, k);
    append_add(BALL, BALL, ALL1);
    append_not(NBAL, BALL);
    append_and(BALL, BALL, CCMP);
    append_and(NBAL, NBAL, CMIN);
    append_add(CMIN, BALL, NBAL);
}

void construct_instructions(int Case, int n, int k, int q) {
    append_store(ALL1, vector<bool>(B, 1));
    vector<bool> one(B, 0);
    one[0] = 1;
    append_store(ONE1, one);
    FOR (i, 0, n - 2) {
        int li = k * i, ri = li + k - 1;
        append_set(CMIN, NUMS, li, ri);
        FOR (j, i + 1, n - 1) {
            int lj = k * j, rj = lj + k - 1;
            append_set(CCMP, NUMS, lj, rj);
            append_xor(CXOR, CMIN, CCMP);
            append_min(k);
            append_xor(CXOR, CXOR, CMIN);
            append_left(CXOR, CXOR, lj);
            append_reset(NUMS, lj, rj);
            append_or(NUMS, NUMS, CXOR);
        }
        append_left(CMIN, CMIN, li);
        append_reset(NUMS, li, ri);
        append_or(NUMS, NUMS, CMIN);
    }
}

/*
in1
0 2 1 1000
0 0
0 1
1 0
1 1
-1
out1
move 1 0
right 1 1 1
and 0 0 1
0
0
0
1

in2
1 2 1 1000
0 0
0 1
1 0
1 1
-1
out2
move 1 0
right 1 1 1
and 2 0 1
or 3 0 1
left 3 3 1
or 0 2 3
0 0
0 1
0 1
1 1
*/

#ifdef WAIMAI
#ifdef _MSC_VER
#   define NORETURN __declspec(noreturn)
#elif defined __GNUC__
#   define NORETURN __attribute__ ((noreturn))
#else
#   define NORETURN
#endif


static const int m = 100;
static const int b = 2000;
static const int id_move = 0;
static const int id_store = 1;
static const int id_and = 2;
static const int id_or = 3;
static const int id_xor = 4;
static const int id_not = 5;
static const int id_left = 6;
static const int id_right = 7;
static const int id_add = 8;
static const int id_print = 9;

static int s, n, k, q;
static int instruction_count = 0;
static bitset<b> reg[m];

static inline void load_register(bitset<b>& bs, vector<int>& v) {
    bs.reset();
    for (int i = 0; i < (int)v.size(); i++) {
        for (int j = 0; j < k; j++) {
            bs[i * k + j] = (v[i] & (1 << j));
        }
    }
}

static inline void unload_register(bitset<b>& bs, vector<int>& v) {
    v.assign(v.size(), 0);
    for (int i = 0; i < (int)v.size(); i++) {
        for (int j = 0; j < k; j++) {
            v[i] |= (bs[i * k + j] << j);
        }
    }
}

static void execute_move(int t, int x) {
    reg[t] = reg[x];
}

static void execute_store(int t, vector<bool> v) {
    for(int i=0; i<b; i++) {
        reg[t][i] = v[i]; // bit-by-bit copy
    }
}

static void execute_and(int t, int x, int y) {
    reg[t] = (reg[x]&reg[y]);
}

static void execute_or(int t, int x, int y) {
    reg[t] = (reg[x]|reg[y]);
}

static void execute_xor(int t, int x, int y) {
    reg[t] = (reg[x]^reg[y]);
}

static void execute_not(int t, int x) {
    reg[t] = (~reg[x]);
}

static void execute_left(int t, int x, int p) {
    reg[t] = (reg[x]<<p);
}

static void execute_right(int t, int x, int p) {
    reg[t] = (reg[x]>>p);
}

static void execute_add(int t, int x, int y) {
    bitset<b> tmp;
    bool carry = false;
    for(int i = 0; i < b; i++) {
        tmp[i] = (reg[x][i] ^ reg[y][i] ^ carry);
        carry = (reg[x][i] & reg[y][i]) || (reg[x][i] & carry) || (reg[y][i] & carry); // discard the last carry
    }
    reg[t] = tmp;
}

static void execute_print(int t) {
    vector<int> v(n);
    unload_register(reg[t], v);
    printf("register %d: ", t);
    for (int i = 0; i < n; i++) {
        printf("%d%c", v[i], i < n - 1 ? ' ' : '\n');
    }
}

struct instruction {
    int type, t, x, y;
    vector<bool> v;

    instruction(int _type): type(_type), t(-1), x(-1), y(-1) {}

    void execute() {
        switch(type) {
            case id_move:
                execute_move(t, x);
                break;
            case id_store:
                execute_store(t, v);
                break;
            case id_and:
                execute_and(t, x, y);
                break;
            case id_or:
                execute_or(t, x, y);
                break;
            case id_xor:
                execute_xor(t, x, y);
                break;
            case id_not:
                execute_not(t, x);
                break;
            case id_left:
                execute_left(t, x, y);
                break;
            case id_right:
                execute_right(t, x, y);
                break;
            case id_add:
                execute_add(t, x, y);
                break;
            case id_print:
                execute_print(t);
                break;
            default:
                assert(false);
        }
    }
    void print() {
        switch(type) {
            case id_move:
                printf("move %d %d\n", t, x);
                break;
            case id_store:
                printf("store %d ", t);
                for(int i=0; i<b; i++) {
                    putchar(v[i]+'0');
                }
                putchar('\n');
                break;
            case id_and:
                printf("and %d %d %d\n", t, x, y);
                break;
            case id_or:
                printf("or %d %d %d\n", t, x, y);
                break;
            case id_xor:
                printf("xor %d %d %d\n", t, x, y);
                break;
            case id_not:
                printf("not %d %d\n", t, x);
                break;
            case id_left:
                printf("left %d %d %d\n", t, x, y);
                break;
            case id_right:
                printf("right %d %d %d\n", t, x, y);
                break;
            case id_add:
                printf("add %d %d %d\n", t, x, y);
                break;
            case id_print:
                printf("print %d\n", t);
                break;
            default:
                assert(false);
        }
    }
};

static vector<instruction> instructions;

NORETURN static inline void error(string reason) {
    printf("%s\n", reason.c_str());
    fflush(stdout);
    exit(0);
}

static inline void check_instructions() {
    if (instruction_count >= q) {
        error("Too many instructions");
    }
}

static inline void check_index(int index) {
    if (index < 0 || index >= m) {
        error("Invalid index");
    }
}

void append_move(int t, int x) {
    check_instructions();
    check_index(t);
    check_index(x);
    instruction i(id_move);
    i.t = t;
    i.x = x;
    instruction_count++;
    instructions.push_back(i);
}

void append_store(int t, vector<bool> v) {
    check_instructions();
    check_index(t);
    if ((int)v.size() != b) {
        error("Value to store is not b bits long");
    }
    instruction i(id_store);
    i.t = t;
    i.v = v;
    instruction_count++;
    instructions.push_back(i);
}

void append_and(int t, int x, int y) {
    check_instructions();
    check_index(t);
    check_index(x);
    check_index(y);
    instruction i(id_and);
    i.t = t;
    i.x = x;
    i.y = y;
    instruction_count++;
    instructions.push_back(i);
}

void append_or(int t, int x, int y) {
    check_instructions();
    check_index(t);
    check_index(x);
    check_index(y);
    instruction i(id_or);
    i.t = t;
    i.x = x;
    i.y = y;
    instruction_count++;
    instructions.push_back(i);
}

void append_xor(int t, int x, int y) {
    check_instructions();
    check_index(t);
    check_index(x);
    check_index(y);
    instruction i(id_xor);
    i.t = t;
    i.x = x;
    i.y = y;
    instruction_count++;
    instructions.push_back(i);
}

void append_not(int t, int x) {
    check_instructions();
    check_index(t);
    check_index(x);
    instruction i(id_not);
    i.t = t;
    i.x = x;
    instruction_count++;
    instructions.push_back(i);
}

void append_left(int t, int x, int p) {
    check_instructions();
    check_index(t);
    check_index(x);
    if (p < 0 || p > b) {
        error("Invalid shift value");
    }
    instruction i(id_left);
    i.t = t;
    i.x = x;
    i.y = p;
    instruction_count++;
    instructions.push_back(i);
}

void append_right(int t, int x, int p) {
    check_instructions();
    check_index(t);
    check_index(x);
    if (p < 0 || p > b) {
        error("Invalid shift value");
    }
    instruction i(id_right);
    i.t = t;
    i.x = x;
    i.y = p;
    instruction_count++;
    instructions.push_back(i);
}

void append_add(int t, int x, int y) {
    check_instructions();
    check_index(t);
    check_index(x);
    check_index(y);
    instruction i(id_add);
    i.t = t;
    i.x = x;
    i.y = y;
    instruction_count++;
    instructions.push_back(i);
}

void append_print(int t) {
    check_index(t);
    instruction i(id_print);
    i.t = t;
    instructions.push_back(i);
}

int main() {
    assert(4 == scanf("%d %d %d %d", &s, &n, &k, &q));

    construct_instructions(s, n, k, q);
    for(instruction &i : instructions) {
        i.print();
    }
    vector<int> a(n);
    bool exited = false;
    while (true) {
        for (int i = 0; i < n; i++) {
            assert(1 == scanf("%d", &a[i]));
            if (i == 0 && a[i] == -1) {
                fflush(stdout);
                exited = true;
                break;
            }
        }
        if (exited) break;
        load_register(reg[0], a);
        for (int i = 1; i < m; i++) {
            reg[i].reset();
        }
        for (instruction& i : instructions) {
            i.execute();
        }
        unload_register(reg[0], a);
        if (s == 0) {
            printf("%d\n", a[0]);
        } else {
            for (int i = 0; i < n; i++) {
                printf("%d%c", a[i], i == n - 1 ? '\n' : ' ');
            }
        }
    }
    printf("number of instructions: %d\n", instruction_count);
    return 0;
}
#endif

• Subtask 1: 10 / 10
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 25
• Subtask 5: 13 / 13
• Subtask 6: 0 / 29