Compilare: user.cpp: In function ‘int main()’: user.cpp:72:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();i++) ^ user.cpp:73:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1;j<v.size();j++) ^ user.cpp:75:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<v.size();k++) ^ user.cpp:85:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size()-2;i++) ^ user.cpp:86:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1;j<v.size()-1;j++) ^ user.cpp:88:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=j+1;k<v.size();k++) ^ user.cpp:62:9: warning: unused variable ‘all’ [-Wunused-variable] int all,x,x1,n,x2,x3; ^ user.cpp:62:20: warning: unused variable ‘x2’ [-Wunused-variable] int all,x,x1,n,x2,x3; ^ user.cpp:62:23: warning: unused variable ‘x3’ [-Wunused-variable] int all,x,x1,n,x2,x3; ^ user.cpp:60:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrulatere.in","r",stdin); ^ user.cpp:61:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrulatere.out","w",stdout); ^ user.cpp:63:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:66:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&x1); ^