Compilare: main.cpp: In function 'int main()': main.cpp:11:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;++i) ^~~ main.cpp:15:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for ( int i =1 ; i <= n; ++i) ^~~ main.cpp:8:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("royfloyd.in","r",stdin); ^ main.cpp:9:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("royfloyd.out","w",stdout); ^ main.cpp:10:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &n); ^ main.cpp:13:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &d[i][j]); ^