Compilare: main.cpp: In function 'int verif(int)': main.cpp:25:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if ((i+j)%2==1) ^ main.cpp: In function 'int dfs(int)': main.cpp:40:14: warning: no return statement in function returning non-void [-Wreturn-type] dfs(it.nod);}} ^ main.cpp: In function 'int main()': main.cpp:69:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (i!=j) ^ main.cpp:76:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (i!=j) ^ main.cpp:83:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if (i!=j) ^ main.cpp:42:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("operatie.in","r",stdin); ^ main.cpp:43:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("operatie.out","w",stdout); ^ main.cpp:45:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&b); ^ main.cpp:48:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i][j]); ^