#include<stdio.h>
class Calc{private:int result;public:void FirstOperate(int a,char o,int b){result=a;OperateNext(o,b);}void OperateNext(char o,int b){switch(o){case '+':result+=b;break;case '-':result-=b;break;case '*':result*=b;break;case '%':result%=b;break;}}int Get(){return result;};};int main(int argc,char**argv){Calc C;int n,k;char j;scanf("%d %c %d",&n,&j,&k);C.FirstOperate(n,j,k);for(int i=0;i<2;i++){scanf(" %c %d",&j,&n);C.OperateNext(j,n);}printf("%d",C.Get());return 0;}