oj.uz

Submission #120215

# Submission time Handle Problem Language Result Execution time Memory
120215 2019-06-24T01:10:09 Z dantoh000 JOIOJI (JOI14_joioji) C++14
95 / 100
 31 ms 3976 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
unordered_map<int,int> m;
int f(int x, int y){
    return (x<<17)^y;
}
main(){
    int n;
    scanf("%lld",&n);
    int ans = 0;
    int a = 0, b= 0;
    for (int i = 0; i < n; i++){
        char x;
        scanf(" %c",&x);
        if (x == 'J'){
            a++; b++;
        }
        else if (x == 'O') a--;
        else if (x == 'I') b--;
        int k = f(a,b);
        if (m[k] == 0){
            m[k] = i;
        }
        else{
            ans = max(ans,i-m[k]);
        }
    }
    printf("%lld",ans);

}

Compilation message

joioji.cpp:8:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
joioji.cpp: In function 'int main()':
joioji.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&n);
     ~~~~~^~~~~~~~~~~
joioji.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %c",&x);
         ~~~~~^~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 304 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Incorrect 2 ms 384 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 3 ms 420 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct

Subtask #3
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 8 ms 1024 KB Output is correct
4 Correct 16 ms 1792 KB Output is correct
5 Correct 21 ms 2196 KB Output is correct
6 Correct 31 ms 2216 KB Output is correct
7 Correct 28 ms 3240 KB Output is correct
8 Correct 27 ms 2096 KB Output is correct
9 Correct 25 ms 2320 KB Output is correct
10 Correct 24 ms 2224 KB Output is correct
11 Correct 27 ms 3468 KB Output is correct
12 Correct 20 ms 1400 KB Output is correct
13 Correct 18 ms 1024 KB Output is correct
14 Correct 29 ms 3976 KB Output is correct
15 Correct 18 ms 768 KB Output is correct