Compilare: main.cpp:21:29: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts' 21 | int get_root(int val,int x, auto b) | ^~~~ main.cpp:29:35: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts' 29 | void union_(int x, int y,int val, auto b) | ^~~~ main.cpp: In function 'void bfs(int, int, int)': main.cpp:44:18: warning: narrowing conversion of 'i' from 'int' to 'short int' [-Wnarrowing] 44 | q.push_back({i,j}); | ^ main.cpp:44:20: warning: narrowing conversion of 'j' from 'int' to 'short int' [-Wnarrowing] 44 | q.push_back({i,j}); | ^ main.cpp:58:30: warning: narrowing conversion of 'x1' from 'int' to 'short int' [-Wnarrowing] 58 | q.push_back({x1,y1}); | ^~ main.cpp:58:33: warning: narrowing conversion of 'y1' from 'int' to 'short int' [-Wnarrowing] 58 | q.push_back({x1,y1}); | ^~ main.cpp: In function 'void bfs1(int, int, int)': main.cpp:66:18: warning: narrowing conversion of 'i' from 'int' to 'short int' [-Wnarrowing] 66 | q.push_back({i,j}); | ^ main.cpp:66:20: warning: narrowing conversion of 'j' from 'int' to 'short int' [-Wnarrowing] 66 | q.push_back({i,j}); | ^ main.cpp:80:30: warning: narrowing conversion of 'x1' from 'int' to 'short int' [-Wnarrowing] 80 | q.push_back({x1,y1}); | ^~ main.cpp:80:33: warning: narrowing conversion of 'y1' from 'int' to 'short int' [-Wnarrowing] 80 | q.push_back({x1,y1}); | ^~ main.cpp: In function 'void solve()': main.cpp:113:39: warning: array subscript -1 is below array bounds of 'int [63001]' [-Warray-bounds] 113 | fr[a[i][j]]++; | ~~~~~~~~~~^ main.cpp:9:5: note: while referencing 'fr' 9 | int fr[251*251]; | ^~ main.cpp:113:39: warning: array subscript -1 is below array bounds of 'int [63001]' [-Warray-bounds] 113 | fr[a[i][j]]++; | ~~~~~~~~~~^ main.cpp:9:5: note: while referencing 'fr' 9 | int fr[251*251]; | ^~ main.cpp:119:41: warning: array subscript -1 is below array bounds of 'int [63001]' [-Warray-bounds] 119 | if(a[i][j]<0&&fr[a[i][j]]>=r) | ~~~~~~~~~~^ main.cpp:9:5: note: while referencing 'fr' 9 | int fr[251*251];