Compilare: main.cpp: In function 'int main()': main.cpp:43:28: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'size_t* {aka long unsigned int*}' [-Wformat=] scanf("%d", &N, ++p); ^ main.cpp:43:28: warning: too many arguments for format [-Wformat-extra-args] main.cpp:82:67: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t {aka long unsigned int}' [-Wformat=] printf(unpaired > N >> 1 ? "%d %d" : "-1", candidate, unpaired); ^ main.cpp:82:67: warning: format '%d' expects argument of type 'int', but argument 3 has type 'size_t {aka long unsigned int}' [-Wformat=] main.cpp: At global scope: main.cpp:7:39: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) size_t get_number() ^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:36:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elmaj.in", "r", stdin); ^ main.cpp:37:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elmaj.out", "w", stdout); ^ main.cpp:43:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N, ++p); ^ main.cpp:50:39: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(inBuffer, 1, 8388608, stdin); ^