Submission #439441

#	Time	Username	Problem	Language	Result	Execution time	Memory
439441		haojiandan	Bit Shift Registers (IOI21_registers)	C++17	58 / 100	1 ms	460 KiB

registers

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

void construct_instructions(int s, int n, int k, int q) {
	int m=100,b=2000;
	vector<bool> A(b,0);
			for (int i=n*k;i<b;i++) A[i]=1; append_store(99,A);
	int r1=98,r2=97,A0=96,A1=95;
	for (int i=0;i<b;i++) if ((i/k)%2==0) A[i]=1; else A[i]=0;
	append_store(r1,A);
	for (int i=0;i<b;i++) if (i%(k*2)==0) A[i]=1; else A[i]=0;
	append_store(r2,A);
	if (s==0) {
		append_or(0,0,99);
		int a=1;
		while (a<n) {
			append_right(1,0,a*k);
			a*=2;
			append_not(2,1);
			append_and(2,2,r1);
			append_and(0,0,r1);
			append_add(3,0,2);
			append_right(3,3,k);
			append_and(3,3,r2);
			append_add(3,3,r1);
			
			append_and(A0,3,0);
			append_not(3,3);
			append_and(A1,3,1);
			append_or(0,A0,A1);
		}
	} else {
		int ANS=94,R1=93,R2=92,R3=91;
		A=vector<bool>(b,0);
		for (int i=0;i<k;i++) A[i]=1;
		append_store(R1,A);
		int One=89;
		A=vector<bool>(b,0); A[n*k]=1; append_store(One,A);
		A=vector<bool>(b,0); for (int i=n*k;i<(n+1)*k;i++) A[i]=1; append_store(R3,A);
		for (int i=1;i<=n;i++) {
			
			int a=1,r=90; append_move(r,0); append_or(r,r,99);
			while (a<n) {
				append_right(1,r,a*k);
				a*=2;
				append_not(2,1);
				append_and(2,2,r1);
				append_and(r,r,r1);
				append_add(3,r,2);
				append_right(3,3,k);
				append_and(3,3,r2);
				append_add(3,3,r1);
				
				append_and(A0,3,r);
				append_not(3,3);
				append_and(A1,3,1);
				append_or(r,A0,A1);
			}
			append_and(r,r,R1);
			append_left(R2,r,(i-1)*k);
			append_or(ANS,ANS,R2);
			
			int lst=85-i+1;
			for (int j=1;j<=n;j++) {
				append_xor(R2,r,0);
				
				append_print(R2);
				
				append_not(R2,R2);
				append_and(R2,R2,One); // n*k
				
				append_print(R2);
				
				append_add(R2,R2,R3); // (n+1)*k;
				
				append_xor(R2,R2,lst);
				append_and(lst,lst,R2);
				
				append_not(R2,R2);
				append_and(R2,R2,R3);
				append_right(R2,R2,(n+1)*k-j*k);
				
				append_or(0,0,R2);
				
				append_left(r,r,k);
				
			}
		}
		append_move(0,ANS);
	}
}

Compilation message (stderr)

registers.cpp: In function 'void construct_instructions(int, int, int, int)':
registers.cpp:8:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    8 |    for (int i=n*k;i<b;i++) A[i]=1; append_store(99,A);
      |    ^~~
registers.cpp:8:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
    8 |    for (int i=n*k;i<b;i++) A[i]=1; append_store(99,A);
      |                                    ^~~~~~~~~~~~
registers.cpp:6:6: warning: unused variable 'm' [-Wunused-variable]
    6 |  int m=100,b=2000;
      |      ^

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