Submission #257044

#	Time	Username	Problem	Language	Result	Execution time	Memory
257044		doowey	Board (CEOI13_board)	C++14	10 / 100	1097 ms	1216 KiB

board

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

vector<int> gen(string t){
    vector<int> res = {1};
    for(char x : t){
        if(x == '1') res.push_back(0);
        else if(x == '2') res.push_back(1);
        else if(x == 'U'){
            res.pop_back();
        }
        else if(x == 'L'){
            int id = res.size() - 1;
            while(id >= 0){
                if(res[id] == 0){
                    res[id] ^= 1;
                }
                else{
                    res[id] ^= 1;
                    break;
                }
                id -- ;
            }
        }
        else{
            int id = res.size() - 1;
            while(id >= 0){
                if(res[id] == 0){
                    res[id] ^= 1;
                    break;
                }
                else{
                    res[id] ^= 1;
                }
                id -- ;
            }
        }
    }
    return res;
}

int main(){
    fastIO;
    string a, b;
    cin >> a >> b;
    vector<int> p = gen(a), q = gen(b);
    if(p.size() > q.size())
        swap(p,q);
    int ans = 0;
    int cq;
    for(int t = 0; t < p.size(); t ++ ){
        if(p[t] != q[t]){
            cq = t + 1;
            while(cq < p.size()){
                if(p[cq] != p[t]) cq ++ ;
                else break;
            }
            while(p.size() > cq){
                ans ++ ;
                p.pop_back();
            }
            ans ++ ;
            for(int j = t; j < cq; j ++ ){
                p[j] ^= 1;
            }
        }
    }
    ans += (int)q.size() - (int)p.size();
    cout << ans << "\n";
    return 0;
}

Compilation message (stderr)

board.cpp: In function 'int main()':
board.cpp:60:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int t = 0; t < p.size(); t ++ ){
                    ~~^~~~~~~~~~
board.cpp:63:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while(cq < p.size()){
                   ~~~^~~~~~~~~~
board.cpp:67:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while(p.size() > cq){
                   ~~~~~~~~~^~~~

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