Submission #1498804

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Source Code Expand

#include <cstdio>
#include <cstring>

using namespace std;

int prv[200010];
char str[200010];

int main ()
{
    fgets (str + 1, 200010, stdin);

    int n = strlen (str + 1) - 1;
    for (int i = 1; i <= n; ++i)
        prv[i] = i - 1;

    int lg = n;
    for (int i = 1; i <= n; ++i)
    {
        for (; i <= n && str[i] == 'T' && str[prv[i]] == 'S';)
        {
            lg -= 2;
            prv[i + 1] = prv[prv[i]];
            ++i;
        }
    }

    printf ("%d\n", lg);

    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:35: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
     fgets (str + 1, 200010, stdin);
                                   ^
In file included from /usr/include/stdio.h:937:0,
                 from /usr/include/c++/5/cstdio:42,
                 from ./Main.cpp:1:
In function ‘char* fgets(char*, int, FILE*)’,
    inlined from ‘int main()’ at ./Main.cpp:11:35:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:261:58: warning: call to ‘__fgets_chk_warn’ declared with attribute warning: fgets called with bigger size than length of destination buffer
  return __fgets_chk_warn (__s, __bos (__s), __n, __stream);
                                                          ^

Judge Result