Submission #366989

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
366989	2021-02-15T22:52:29 Z	MilosMilutinovic	JOIOJI (JOI14_joioji)	C++14	100 / 100	47 ms	6124 KB

joioji

#include <bits/stdc++.h>
using namespace std;
const int N=2000050;
int n;
char s[N];
int main(){
	scanf("%i%s",&n,s);
	map<pair<int,int>,int> lst;
	map<char,int> cnt;
	int ans=0;
	lst[{0,0}]=0;
	for(int i=0;i<n;i++){
		cnt[s[i]]++;
		pair<int,int> curr;
		curr.first=cnt['J']-cnt['O'];
		curr.second=cnt['J']-cnt['I'];
		if(lst[curr]!=0||(curr.first==0&&curr.second==0)){
			ans=max(ans,i-lst[curr]+1);
		}else lst[curr]=i+1;
	}
	printf("%i",ans);
	return 0;
}

Compilation message

joioji.cpp: In function 'int main()':
joioji.cpp:7:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%i%s",&n,s);
      |  ~~~~~^~~~~~~~~~~~~

Subtask #1

5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	0 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	0 ms	364 KB	Output is correct
7	Correct	0 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	0 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	0 ms	364 KB	Output is correct
12	Correct	0 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct

Subtask #2

15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	2 ms	492 KB	Output is correct
10	Correct	1 ms	492 KB	Output is correct

Subtask #3

80.0 / 80.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	492 KB	Output is correct
2	Correct	7 ms	1004 KB	Output is correct
3	Correct	12 ms	1388 KB	Output is correct
4	Correct	22 ms	2156 KB	Output is correct
5	Correct	38 ms	3308 KB	Output is correct
6	Correct	44 ms	3436 KB	Output is correct
7	Correct	47 ms	3948 KB	Output is correct
8	Correct	44 ms	3308 KB	Output is correct
9	Correct	45 ms	3692 KB	Output is correct
10	Correct	44 ms	3436 KB	Output is correct
11	Correct	41 ms	5100 KB	Output is correct
12	Correct	33 ms	2156 KB	Output is correct
13	Correct	31 ms	1516 KB	Output is correct
14	Correct	34 ms	6124 KB	Output is correct
15	Correct	23 ms	1132 KB	Output is correct