Submission #668820

#	Time	Username	Problem	Language	Result	Execution time	Memory
668820		as111	Board (CEOI13_board)	C++14	0 / 100	6 ms	980 KiB

board

#include <iostream>
#include <string>
#define MAXN 100000

using namespace std;
int bitA[MAXN + 5];
int bitB[MAXN + 5];
int main() {
	string A, B;
	cin >> A >> B;
	int startA = 0;
	int startB = 0;
	int endA = 0;
	int endB = 0;
	for (int i = 0; i < A.length(); i++) {
		if (A[i] == '1') {
			bitA[endA] = 0;
			endA++;
		}
		if (A[i] == '2') {
			bitA[endA] = 1;
			endA++;
		}
		if (A[i] == 'U') {
			endA--;
		}
		if (A[i] == 'L') { // subtract 1
			if (bitA[endA] == 1)bitA[endA] = 0;
			if (bitA[endA] == 0) {
				int pos = endA;
				while (pos > 0) {
					if (bitA[pos] == 1) {
						bitA[pos] = 0;
						break;
					}
					bitA[pos] = 1;
					pos--;
				}
			}
		}
		if (A[i] == 'R') { // add 1
			if (bitA[endA] == 0)bitA[endA] = 1;
			if (bitA[endA] == 1) {
				int pos = endA;
				while (pos > 0) {
					if (bitA[pos] == 0) {
						bitA[pos] = 1;
						break;
					}
					bitA[pos] = 1;
					pos--;
				}
			}
		}
	}
}

Compilation message (stderr)

board.cpp: In function 'int main()':
board.cpp:15:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for (int i = 0; i < A.length(); i++) {
      |                  ~~^~~~~~~~~~~~
board.cpp:11:6: warning: unused variable 'startA' [-Wunused-variable]
   11 |  int startA = 0;
      |      ^~~~~~
board.cpp:12:6: warning: unused variable 'startB' [-Wunused-variable]
   12 |  int startB = 0;
      |      ^~~~~~
board.cpp:14:6: warning: unused variable 'endB' [-Wunused-variable]
   14 |  int endB = 0;
      |      ^~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10