foo.cc:5:12: error: stray '\357' in program
 int n,t,m,x，ans;
            ^
foo.cc:5:13: error: stray '\274' in program
 int n,t,m,x，ans;
             ^
foo.cc:5:14: error: stray '\214' in program
 int n,t,m,x，ans;
              ^
foo.cc:5:15: error: expected initializer before 'ans'
 int n,t,m,x，ans;
               ^~~
foo.cc: In function 'int main()':
foo.cc:24:21: error: 'ans' was not declared in this scope
                     ans--;
                     ^~~
foo.cc:24:21: note: suggested alternative: 'abs'
                     ans--;
                     ^~~
                     abs
foo.cc:31:18: error: 'x' was not declared in this scope
             cin>>x;
                  ^
foo.cc:37:17: error: 'ans' was not declared in this scope
                 ans++;
                 ^~~
foo.cc:37:17: note: suggested alternative: 'abs'
                 ans++;
                 ^~~
                 abs
foo.cc:39:23: error: 'ans' was not declared in this scope
         printf("%d\n",ans);
                       ^~~
foo.cc:39:23: note: suggested alternative: 'abs'
         printf("%d\n",ans);
                       ^~~
                       abs

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