Submission #771750

#	Time	Username	Problem	Language	Result	Execution time	Memory
771750		drdilyor	Bit Shift Registers (IOI21_registers)	C++17	58 / 100	1 ms	340 KiB

registers

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

constexpr int m = 100;
constexpr int b = 2000;
constexpr int B = 2000;

void construct_instructions(int s, int n, int k, int q) {
    assert(s==0);

    int used = 1;
    int mask, ones;
    vector<bool> maskv(B), onesv(B, 1);
    for (int i = 0; i < n; i++)
        maskv[k * (i+1) - 1] = 1;

    append_store(mask = used++, maskv);
    append_store(ones = used++, onesv);
    append_xor(0, 0, ones);

    int ans = used++;
    int val = used++;
    int has_zero = used++;
    int tmp = used++;
    int premask = used++;
    int curans = used++;

    for (int bit = k-1; bit >= 0; bit--) {
        append_and(val, 0, mask);
        append_add(has_zero, ones, val);

        append_right(curans, has_zero, b-1);
        append_left(curans, curans, bit);
        append_or(ans, curans, ans);
        if (!bit) break;

        append_right(has_zero, has_zero, b / 2 + 1);
        append_left(tmp, has_zero, 1);
        append_or(has_zero, has_zero, tmp);

        append_and(premask, mask, has_zero);
        append_or(mask, premask, val);
        append_right(mask, mask, 1);
    }
    append_move(0, ans);
}

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