Compilare: user.cpp: In function ‘void Search(int)’: user.cpp:87:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (!leaves[i].first) ^ user.cpp: In function ‘char Advance()’: user.cpp:24:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, 1, SIZE, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:136:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecotraseu.in", "r", stdin); ^ user.cpp:137:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecotraseu.out", "w", stdout); ^ user.cpp: In function ‘void Solve(int)’: user.cpp:110:9: warning: ‘centroid’ may be used uninitialized in this function [-Wmaybe-uninitialized] int centroid; ^