It looks like the use of parentheses, applied to values
Note INPUT'
//====================================================================||
// ||
// ||
// Author : GCA ||
// 6AE7EE02212D47DAD26C32C0FE829006 ||
//====================================================================||
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <climits>
#include<stack>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <cctype>
#include <utility>
using namespace std;
#ifdef ONLINE\_JUDGE
#define ll "%lld"
#else
#define ll "%I64d"
#endif
typedef unsigned int uint;
typedef long long int Int;
#define Set(a,s) memset(a,s,sizeof(a))
#define Write(w) freopen(w,"w",stdout)
#define Read(r) freopen(r,"r",stdin)
#define Pln() printf("\\n")
#define I\_de(x,n)for(int i=0;i<n;i++)printf("%d ",x\[i\]);Pln()
#define De(x)printf(#x"%d\\n",x)
#define For(i,x)for(int i=0;i<x;i++)
#define CON(x,y) x##y
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\\
printf("%d ",dp\[htx\]\[hty\]);}Pln();}
#define M 10000005
#define PII pair<int,int\>
#define PB push\_back
#define oo INT\_MAX
#define Set\_oo 0x3f
#define Is\_debug true
#define debug(...) if(Is\_debug)printf("DEBUG: "),printf(\_\_VA\_ARGS\_\_)
#define FOR(it,c) for(\_\_typeof((c).begin()) it=(c).begin();it!=(c).end();it++)
#define eps 1e-6
bool xdy(double x,double y){return x>y+eps;}
bool xddy(double x,double y){return x>y-eps;}
bool xcy(double x,double y){return x<y-eps;}
bool xcdy(double x,double y){return x<y+eps;}
int min3(int x,int y,int z){
int tmp=min(x,y);
return min(tmp,z);
}
int max3(int x,int y,int z){
int tmp=max(x,y);
return max(tmp,z);
}
int x;
int w\[M\];
int st\[M\];
int stnum;
int main() {
ios\_base::sync\_with\_stdio(0);
char c;
while(~scanf("%d%c",&x,&c)){
stnum=0;
Set(w,0);
x=-x;
w\[stnum\]=x;
st\[stnum++\]=x;
bool can=true;
if(c!='\\n'){
while(~scanf("%d%c",&x,&c)){
// debug("%d %d \\n",stnum,w\[stnum\]);
if(x<0){
x=-x;
if(stnum>0){
w\[stnum-1\]-=x;
if(w\[stnum-1\]<=0){
can=false;
}
}
w\[stnum\]=x;
st\[stnum++\]=x;
}else{
if(x!=st\[stnum-1\])can=false;
st\[--stnum\]=-1;
}
if(c=='\\n')break;
}
}else can=false;
if(stnum!=0||!can)printf(":-( Try again.\\n");
else printf(":-) Matrioshka!\\n");
}
}