【字符串处理】HDU6144 Arithmetic of Bomb

题面在这里

SB题，没什么好讲的了

示例程序：

#include<cstdio>
#include<cstring>
#define LL long long
using namespace std;

const int tt=1000000007,maxn=100005;
int tst,n,len;
LL res;
char s[maxn],ans[maxn],tem[maxn];
int main(){
    scanf("%d",&tst);
    while (tst--){
        scanf("%s",s);
        len=0;
        for (int i=0;s[i];i++)
         if (s[i]=='('){
            i++;
            int top=0;
            while ('0'<=s[i]&&s[i]<='9') tem[top++]=s[i++];
            i+=3;int t=s[i]-48;
            while (t--){
                for (int j=0;j<top;j++)
                 ans[len++]=tem[j];
            }i++;
         }else ans[len++]=s[i];
        res=0;
        for (int i=0;i<len;i++) res=(res*10+ans[i]-48)%tt;
        printf("%lld\n",res);
    }
    return 0;
}