Submission #384273

#	Time	Username	Problem	Language	Result	Execution time	Memory
384273		ijxjdjd	Board (CEOI13_board)	C++14	0 / 100	5 ms	1260 KiB

board

#include <bits/stdc++.h>
#define FR(i, N) for (int i = 0; i < int(N); i++)
#define all(x) begin(x), end(x)

using namespace std;

using ll = long long;

vector<int> parse(string s) {
    deque<pair<bool, int>> res;
    res.push_back({1, 1});
    int sz = 1;
    for (char c : s) {
        if (c == '1') {
            if (!res.back().first) {
                res.back().second++;
            }
            else {
                res.push_back({0, 1});
            }
            sz++;
        }
        else if (c == '2') {
            if (res.back().first) {
                res.back().second++;
            }
            else {
                res.push_back({1, 1});
            }
            sz++;
        }
        else if (c == 'U') {
            res.pop_back();
            sz--;
        }
        else if (c == 'L') {
            if (res.back().first == 1) {
                res.back().second--;
                if (res.back().second == 0) {
                    res.pop_back();
                    res.back().second++;
                }
                else {
                    res.push_back({0, 1});
                }
            }
            else {
                int lst = res.back().second;
                res.pop_back();
                res.back().second--;
                if (res.back().second == 0) {
                    res.pop_back();
                    res.back().second++;
                }
                else {
                    res.push_back({0, 1});
                }
                res.push_back({1, lst});
            }
        }
        else if (c == 'R') {
            if (res.back().first == 0) {
                res.back().second--;
                if (res.back().second == 0) {
                    res.pop_back();
                    res.back().second++;
                }
                else {
                    res.push_back({1, 1});
                }
            }
            else {
                int lst = res.back().second;
                res.pop_back();
                res.back().second--;
                if (res.back().second == 0) {
                    res.pop_back();
                    res.back().second++;
                }
                else {
                    res.push_back({1, 1});
                }
                res.push_back({0, lst});
            }
        }
    }
    vector<int> ret(sz);
    int cur = sz;
    while (res.size()) {
        FR(iter, res.back().second) {
            ret[--cur] = res.back().first;
        }
        res.pop_back();
    }
    return ret;
}
int main() {
	cin.tie(0);
	cin.sync_with_stdio(0);
	string A;
	string B;
	cin >> A >> B;
	vector<int> sA = parse(A);
	vector<int> sB = parse(B);
	if (sA.size() < sB.size()) {
        swap(sA, sB);
	}
	int d = 0;
	while (sA.size() > sB.size()) {
        sA.pop_back();
        d++;
	}
	if (sA > sB) {
        swap(sA, sB);
	}
	int res = (int)(1e9);
	int diff = 0;
	for (int k = 0; k < sA.size(); k++) {
        diff *= 2;
        diff += sB[k]-sA[k];
        if (diff >= 100) {
            break;
        }
        res = min((int(sA.size())-k-1)*2+d+diff, res);
	}

	cout << res << '\n';
	return 0;
}

Compilation message (stderr)

board.cpp: In function 'int main()':
board.cpp:118:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  118 |  for (int k = 0; k < sA.size(); k++) {
      |                  ~~^~~~~~~~~~~

• 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