welcome#

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#include <stdio.h>
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int main(void) {
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    FILE *fp;
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    char buf[0x80] = {};
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    size_t flag_len = 0;
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    printf("Welcome To DreamHack Wargame!\n");
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    fp = fopen("/flag", "r");
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    fseek(fp, 0, SEEK_END);
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    flag_len = ftell(fp);
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    fseek(fp, 0, SEEK_SET);
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    fread(buf, 1, flag_len, fp);
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    fclose(fp);
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    printf("FLAG : ");
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    fwrite(buf, 1, flag_len, stdout);
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}

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DH{5cc72596cba7104569abb37f71b8ccf3}