Compilare: main.cpp: In function 'll bf()': main.cpp:8:28: warning: unnecessary parentheses in declaration of 'u' [-Wparentheses] 8 | #define FOR1(i, n) for(int (i)=1; (i)<=(n); (i)++) | ^ main.cpp:62:5: note: in expansion of macro 'FOR1' 62 | FOR1(u, n) for(auto it : e[u]) d[u][it.first] = d[it.first][u] = it.second; | ^~~~ main.cpp:8:28: warning: unnecessary parentheses in declaration of 'k' [-Wparentheses] 8 | #define FOR1(i, n) for(int (i)=1; (i)<=(n); (i)++) | ^ main.cpp:63:5: note: in expansion of macro 'FOR1' 63 | FOR1(k, n){ | ^~~~ main.cpp:8:28: warning: unnecessary parentheses in declaration of 'u' [-Wparentheses] 8 | #define FOR1(i, n) for(int (i)=1; (i)<=(n); (i)++) | ^ main.cpp:64:9: note: in expansion of macro 'FOR1' 64 | FOR1(u, n){ | ^~~~ main.cpp:8:28: warning: unnecessary parentheses in declaration of 'v' [-Wparentheses] 8 | #define FOR1(i, n) for(int (i)=1; (i)<=(n); (i)++) | ^ main.cpp:65:13: note: in expansion of macro 'FOR1' 65 | FOR1(v, n){ | ^~~~ main.cpp: In function 'bool solve()': main.cpp:7:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses] 7 | #define FOR(i, n) for(int (i)=0; (i)<(n); (i)++) | ^ main.cpp:87:5: note: in expansion of macro 'FOR' 87 | FOR(i, n-1){ | ^~~ main.cpp:8:28: warning: unnecessary parentheses in declaration of 'u' [-Wparentheses] 8 | #define FOR1(i, n) for(int (i)=1; (i)<=(n); (i)++) | ^ main.cpp:102:5: note: in expansion of macro 'FOR1' 102 | FOR1(u, n){ | ^~~~ main.cpp:8:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses] 8 | #define FOR1(i, n) for(int (i)=1; (i)<=(n); (i)++) | ^ main.cpp:106:5: note: in expansion of macro 'FOR1' 106 | FOR1(i, n-1) | ^~~~