Compilare: main.cpp: In function 'int main()': main.cpp:13:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=n;i++) if(i!=n/2) Q.push_back(i); ok=1; last=1; ^~~ main.cpp:13:50: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i=1;i<=n;i++) if(i!=n/2) Q.push_back(i); ok=1; last=1; ^~ main.cpp:10:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sah.in","r",stdin); ^ main.cpp:11:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sah.out","w",stdout); ^ main.cpp:12:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^