Compilare: main.cpp: In function 'int main()': main.cpp:45:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(crt.second == l.size()) ~~~~~~~~~~~^~~~~~~~~~~ main.cpp:51:38: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=] printf("%d %d", maxim, l.size() - 1); ^ main.cpp:31:28: warning: unused variable 'poz' [-Wunused-variable] int nrc = 0, maxim = -1, poz; ^~~ main.cpp:29:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("blis.in", "r", stdin); ^ main.cpp:30:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("blis.out", "w", stdout); ^ main.cpp:33:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &k); ^ main.cpp:34:32: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s + 1, NMAX + 5, stdin); ^ In file included from /usr/include/stdio.h:936:0, from /usr/include/c++/6/cstdio:42, from /usr/include/c++/6/ext/string_conversions.h:43, from /usr/include/c++/6/bits/basic_string.h:5420, from /usr/include/c++/6/string:52, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:1: In function 'char* fgets(char*, int, FILE*)', inlined from 'int main()' at main.cpp:34:32: /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); ^