oj.uz

Submission #63522

# Submission time Handle Problem Language Result Execution time Memory
63522 2018-08-02T05:17:49 Z Just_Solve_The_Problem Election (BOI18_election) C++11
28 / 100
 35 ms 1124 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) {
        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 35 ms 376 KB Output is correct
2 Correct 8 ms 460 KB Output is correct
3 Correct 7 ms 460 KB Output is correct
4 Correct 8 ms 460 KB Output is correct
5 Correct 6 ms 544 KB Output is correct

Subtask #2
0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 376 KB Output is correct
2 Correct 8 ms 460 KB Output is correct
3 Correct 7 ms 460 KB Output is correct
4 Correct 8 ms 460 KB Output is correct
5 Correct 6 ms 544 KB Output is correct
6 Runtime error 5 ms 1124 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 35 ms 376 KB Output is correct
2 Correct 8 ms 460 KB Output is correct
3 Correct 7 ms 460 KB Output is correct
4 Correct 8 ms 460 KB Output is correct
5 Correct 6 ms 544 KB Output is correct
6 Runtime error 5 ms 1124 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -