Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:72:9: warning: unused variable 't1' [-Wunused-variable] int t1 = Heavy_Edge[nod]; ^~ main.cpp: In function 'void update(int, int, int, int, int)': main.cpp:96:7: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:98:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' aint[nod]=max(aint[2*nod],aint[2*nod+1]); ^~~~ main.cpp: In function 'char read_ch()': main.cpp:19:35: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(_in_buff, 1, 32768, stdin); ^ main.cpp: In function 'int main()': main.cpp:186:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("heavypath.in","r",stdin); ^ main.cpp:187:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("heavypath.out","w",stdout); ^