Eroare de compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:20:52: warning: NULL used in arithmetic [-Wpointer-arith] if(s[x1][y1]=='0'||s[x1][y1]=='\n'||s[x1][y1]==NULL)continue; ^~~~ main.cpp: In function 'int main()': main.cpp:38:18: error: 'gets' was not declared in this scope gets(s[i]+1); ^ main.cpp:66:11: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(v[x2][y2]!=i) ^~ main.cpp:68:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(grad[x2][y2]==2)break; ^~ main.cpp:79:10: warning: left operand of comma operator has no effect [-Wunused-value] x1,y1,ok=1; ^~ main.cpp:79:16: warning: right operand of comma operator has no effect [-Wunused-value] x1,y1,ok=1; ^ main.cpp:95:11: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(v[x2][y2]!=i) ^~ main.cpp:97:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(grad[x2][y2]==2)break; ^~ main.cpp:33:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sarpe.in","r",stdin); ^ main.cpp:34:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sarpe.out","w",stdout); ^ main.cpp:36:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&m,&n); ^ Non zero exit status: 1