Submission #1320792


Source Code Expand

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

int main(){
    int n;
    cin >> n;
    string s;
    cin >> s;
    if(s.length() % 2 == 1){
        int ans = (n - 1) / 2;
        for(int num=ans;num>=0;--num){
            if(num == 0){
                if(s[0] == 'b') cout << ans << endl;
                else cout << "-1" << endl;
            }else if(num % 3 == 1){
                if(s[0] == 'a' && s[s.length()-1] == 'c'){
                    s.pop_back();
                    s.erase(s.begin());
                }else{
                    cout << "-1" << endl;
                    break;
                }
            }else if(num % 3 == 2){
                if(s[0] == 'c' && s[s.length()-1] == 'a'){
                    s.pop_back();
                    s.erase(s.begin());
                }else{
                    cout << "-1" << endl;
                    break;
                }
            }else{
                if(s[0] == 'b' && s[s.length()-1] == 'b'){
                    s.pop_back();
                    s.erase(s.begin());
                }else{
                    cout << "-1" << endl;
                    break;
                }
            }
        }
    }else{
        cout << "-1" << endl;
    }

    return 0;
}

Submission Info

Submission Time
Task B - 手芸王
User nicklaw296
Language C++14 (GCC 5.4.1)
Score 100
Code Size 1286 Byte
Status AC
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 4
AC × 29
Set Name Test Cases
Sample subtask0-sample01.txt, subtask0-sample02.txt, subtask0-sample03.txt, subtask0-sample04.txt
All subtask0-sample01.txt, subtask0-sample02.txt, subtask0-sample03.txt, subtask0-sample04.txt, subtask1-01.txt, subtask1-02.txt, subtask1-03.txt, subtask1-04.txt, subtask1-05.txt, subtask1-06.txt, subtask1-07.txt, subtask1-08.txt, subtask1-09.txt, subtask1-10.txt, subtask1-11.txt, subtask1-12.txt, subtask1-13.txt, subtask1-14.txt, subtask1-15.txt, subtask1-16.txt, subtask1-17.txt, subtask1-18.txt, subtask1-19.txt, subtask1-20.txt, subtask1-21.txt, subtask1-22.txt, subtask1-23.txt, subtask1-24.txt, subtask1-25.txt
Case Name Status Exec Time Memory
subtask0-sample01.txt AC 1 ms 256 KB
subtask0-sample02.txt AC 1 ms 256 KB
subtask0-sample03.txt AC 1 ms 256 KB
subtask0-sample04.txt AC 1 ms 256 KB
subtask1-01.txt AC 1 ms 256 KB
subtask1-02.txt AC 1 ms 256 KB
subtask1-03.txt AC 1 ms 256 KB
subtask1-04.txt AC 1 ms 256 KB
subtask1-05.txt AC 1 ms 256 KB
subtask1-06.txt AC 1 ms 256 KB
subtask1-07.txt AC 1 ms 256 KB
subtask1-08.txt AC 1 ms 256 KB
subtask1-09.txt AC 1 ms 256 KB
subtask1-10.txt AC 1 ms 256 KB
subtask1-11.txt AC 1 ms 256 KB
subtask1-12.txt AC 1 ms 256 KB
subtask1-13.txt AC 1 ms 256 KB
subtask1-14.txt AC 1 ms 256 KB
subtask1-15.txt AC 1 ms 256 KB
subtask1-16.txt AC 1 ms 256 KB
subtask1-17.txt AC 1 ms 256 KB
subtask1-18.txt AC 1 ms 256 KB
subtask1-19.txt AC 1 ms 256 KB
subtask1-20.txt AC 1 ms 256 KB
subtask1-21.txt AC 1 ms 256 KB
subtask1-22.txt AC 1 ms 256 KB
subtask1-23.txt AC 1 ms 256 KB
subtask1-24.txt AC 1 ms 256 KB
subtask1-25.txt AC 1 ms 256 KB