oj.uz

Submission #63525

# Submission time Handle Problem Language Result Execution time Memory
63525 2018-08-02T05:21:00 Z kylych03 Election (BOI18_election) C++14
28 / 100
 10 ms 1140 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#define ll long long
 
const int N = (int)2e3 + 7;
 
int used[N];
 
main() {
  int n;
  string s;
  scanf("%d", &n);
  cin >> s;
  s = " " + s;
  int q;
  scanf("%d", &q);
  while (q--) {
    int l, r;
    int ans = 0;
    scanf("%d %d", &l, &r);
    int b = 0;
    for (int i = l; i <= r; i++) {
      b += ((s[i] == 'T') ? -1 : 1);
      if (b < 0) {
        used[i] = 1;
        ans++;
        b++;
      }
    }
    b = 0;
    for (int i = r; i >= l; i--) {
      if (used[i]) {
        used[i] = 0;
        continue;
      }
      b += ((s[i] == 'T') ? -1 : 1);
      if (b < 0) {
        //used[i] = 1;
        ans++;
        b++;
      }
    }
    printf("%d\n", ans);
  }
}

Compilation message

election.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
election.cpp: In function 'int main()':
election.cpp:14:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
election.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &q);
   ~~~~~^~~~~~~~~~
election.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &l, &r);
     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 376 KB Output is correct
2 Correct 7 ms 616 KB Output is correct
3 Correct 7 ms 616 KB Output is correct
4 Correct 9 ms 616 KB Output is correct
5 Correct 7 ms 616 KB Output is correct

Subtask #2
0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 376 KB Output is correct
2 Correct 7 ms 616 KB Output is correct
3 Correct 7 ms 616 KB Output is correct
4 Correct 9 ms 616 KB Output is correct
5 Correct 7 ms 616 KB Output is correct
6 Runtime error 8 ms 1140 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 376 KB Output is correct
2 Correct 7 ms 616 KB Output is correct
3 Correct 7 ms 616 KB Output is correct
4 Correct 9 ms 616 KB Output is correct
5 Correct 7 ms 616 KB Output is correct
6 Runtime error 8 ms 1140 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -