Wrong Answer
/in/foo.cc: In function 'void change(int, int, int)': /in/foo.cc:30:41: warning: right operand of comma operator has no effect [-Wunused-value] temp=min(c[t],c[t^1]),c[t]-=temp,c[t^1]; ~~~~~^
/in/foo.cc: In function 'void change(int, int, int)': /in/foo.cc:30:41: warning: right operand of comma operator has no effect [-Wunused-value] temp=min(c[t],c[t^1]),c[t]-=temp,c[t^1]; ~~~~~^