oj.uz

Submission #200516

# Submission time Handle Problem Language Result Execution time Memory
200516 2020-02-07T03:40:50 Z arnold518 JOIOJI (JOI14_joioji) C++14
100 / 100
 50 ms 6264 KB 
#include <bits/stdc++.h>
using namespace std;

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

const int MAXN = 2e5;

int N;
char S[MAXN+10];

struct tup
{
	int a, b, c;
	bool operator < (const tup &p) const
	{
		if(a!=p.a) return a<p.a;
		if(b!=p.b) return b<p.b;
		return c<p.c;
	}
};
map<tup, int> M;
int ans;

int main()
{
	int i, j;

	scanf("%d%s", &N, S+1);
	int J=0, O=0, I=0;
	M[{0, 0, 0}]=0;
	for(i=1; i<=N; i++)
	{
		if(S[i]=='J') J++;
		else if(S[i]=='O') O++;
		else I++;

		int p, q, r;
		p=J-min({J, O, I});
		q=O-min({J, O, I});
		r=I-min({J, O, I});

		if(M.find({p, q, r})!=M.end()) ans=max(ans, i-M[{p, q, r}]);
		else M[{p, q, r}]=i;
	}
	printf("%d", ans);
}

Compilation message

joioji.cpp: In function 'int main()':
joioji.cpp:28:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j;
         ^
joioji.cpp:30:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%s", &N, S+1);
  ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 380 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 6 ms 376 KB Output is correct
4 Correct 6 ms 376 KB Output is correct
5 Correct 6 ms 504 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 380 KB Output is correct
8 Correct 6 ms 504 KB Output is correct
9 Correct 9 ms 504 KB Output is correct
10 Correct 6 ms 508 KB Output is correct

Subtask #3
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 504 KB Output is correct
2 Correct 11 ms 1016 KB Output is correct
3 Correct 15 ms 1400 KB Output is correct
4 Correct 26 ms 2296 KB Output is correct
5 Correct 38 ms 3468 KB Output is correct
6 Correct 50 ms 3576 KB Output is correct
7 Correct 47 ms 4088 KB Output is correct
8 Correct 46 ms 3448 KB Output is correct
9 Correct 46 ms 3832 KB Output is correct
10 Correct 46 ms 3576 KB Output is correct
11 Correct 45 ms 5280 KB Output is correct
12 Correct 34 ms 2296 KB Output is correct
13 Correct 36 ms 1656 KB Output is correct
14 Correct 41 ms 6264 KB Output is correct
15 Correct 29 ms 1272 KB Output is correct