Submission #1968002


Source Code Expand

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#include <iostream>
using namespace std;
int main(){
  string s;
  cin >> s;
  int t = 0, m = 0;
  for(int i = 0; i < s.length(); ++i){
    if(s[i] == '2') ++t;
    else --t;
    if(t < 0){
      cout << -1 << endl;
      return 0;
    }
    m = max(m, t);
  }
  if(t != 0) cout << -1 << endl;
  else cout << m << endl;
  return 0;
}

Submission Info

Submission Time
Task B - 2525文字列分解
User TAB
Language C++14 (GCC 5.4.1)
Score 300
Code Size 353 Byte
Status
Exec Time 1 ms
Memory 256 KB

Test Cases

Set Name Score / Max Score Test Cases
Sample 0 / 0 00_example_01.txt, 00_example_02.txt, 00_example_03.txt, 00_example_04.txt
All 300 / 300 00_example_01.txt, 00_example_02.txt, 00_example_03.txt, 00_example_04.txt, 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt
Case Name Status Exec Time Memory
00_example_01.txt 1 ms 256 KB
00_example_02.txt 1 ms 256 KB
00_example_03.txt 1 ms 256 KB
00_example_04.txt 1 ms 256 KB
01.txt 1 ms 256 KB
02.txt 1 ms 256 KB
03.txt 1 ms 256 KB
04.txt 1 ms 256 KB
05.txt 1 ms 256 KB
06.txt 1 ms 256 KB
07.txt 1 ms 256 KB
08.txt 1 ms 256 KB
09.txt 1 ms 256 KB
10.txt 1 ms 256 KB
11.txt 1 ms 256 KB
12.txt 1 ms 256 KB
13.txt 1 ms 256 KB
14.txt 1 ms 256 KB
15.txt 1 ms 256 KB
16.txt 1 ms 256 KB
17.txt 1 ms 256 KB
18.txt 1 ms 256 KB
19.txt 1 ms 256 KB
20.txt 1 ms 256 KB
21.txt 1 ms 256 KB
22.txt 1 ms 256 KB
23.txt 1 ms 256 KB
24.txt 1 ms 256 KB
25.txt 1 ms 256 KB
26.txt 1 ms 256 KB
27.txt 1 ms 256 KB
28.txt 1 ms 256 KB
29.txt 1 ms 256 KB
30.txt 1 ms 256 KB
31.txt 1 ms 256 KB
32.txt 1 ms 256 KB
33.txt 1 ms 256 KB
34.txt 1 ms 256 KB
35.txt 1 ms 256 KB
36.txt 1 ms 256 KB