Compilare: user.cpp: In function ‘int main()’: user.cpp:19:9: warning: this ‘while’ clause does not guard... [-Wmisleading-indentation] while(k>=1&&v[i]<=st[k]) ^~~~~ user.cpp:21:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘while’ if(k>=1) f[i]+=st[k]; ^~ user.cpp:7:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xspe.in","r",stdin); ^ user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("xspe.out","w",stdout); ^