foo.cc: In function 'int main()':
foo.cc:6:4: error: 'cinn' was not declared in this scope
    cinn>>n;
    ^~~~
foo.cc:6:4: note: suggested alternative: 'uint'
    cinn>>n;
    ^~~~
    uint
foo.cc:9:21: warning: right operand of comma operator has no effect [-Wunused-value]
       cin>>m>>p1,s1,s2;
                     ^~
foo.cc:9:23: warning: right operand of comma operator has no effect [-Wunused-value]
       cin>>m>>p1,s1,s2;
                       ^
foo.cc:13:15: error: unable to find numeric literal operator 'operator""dra'
        if(i<n)1dra=a[i]*(m-i)
               ^~~~
foo.cc:13:15: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes
foo.cc:18:4: error: 'ans' was not declared in this scope
    ans=m;
    ^~~
foo.cc:18:4: note: suggested alternative: 'abs'
    ans=m;
    ^~~
    abs
foo.cc:24:11: warning: init-statement in selection statements only available with -std=c++1z or -std=gnu++1z
        if(labs(tig-(d+(m-i)*s2))<minx;
           ^~~~
foo.cc:24:34: error: 'minx' was not declared in this scope
        if(labs(tig-(d+(m-i)*s2))<minx;
                                  ^~~~
foo.cc:24:34: note: suggested alternative: 'main'
        if(labs(tig-(d+(m-i)*s2))<minx;
                                  ^~~~
                                  main
foo.cc:25:30: error: 'ans' was not declared in this scope
        minx=tig-(d+(m-i)*s2),ans=1;
                              ^~~
foo.cc:25:30: note: suggested alternative: 'abs'
        minx=tig-(d+(m-i)*s2),ans=1;
                              ^~~
                              abs
foo.cc:25:35: error: expected ')' before ';' token
        minx=tig-(d+(m-i)*s2),ans=1;
                                   ^
foo.cc:33:11: warning: init-statement in selection statements only available with -std=c++1z or -std=gnu++1z
        if(labs(dra-(d+(i-m)*s2))<minx;
           ^~~~
foo.cc:33:34: error: 'minx' was not declared in this scope
        if(labs(dra-(d+(i-m)*s2))<minx;
                                  ^~~~
foo.cc:33:34: note: suggested alternative: 'main'
        if(labs(dra-(d+(i-m)*s2))<minx;
                                  ^~~~
                                  main
foo.cc:34:36: error: 'ans' was not declared in this scope
        minx=labs(dra-(t+(i-m)*s2)),ans=1;
                                    ^~~
foo.cc:34:36: note: suggested alternative: 'abs'
        minx=labs(dra-(t+(i-m)*s2)),ans=1;
                                    ^~~
                                    abs
foo.cc:34:41: error: expected ')' before ';' token
        minx=labs(dra-(t+(i-m)*s2)),ans=1;
                                         ^
foo.cc:37:10: error: 'ans' was not declared in this scope
    cout<<ans; 
          ^~~
foo.cc:37:10: note: suggested alternative: 'abs'
    cout<<ans; 
          ^~~
          abs

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