#include <cstdio>
#include <map>
#include <string>

using namespace std;

void getstr(char *s) {
    int i=0;
    char c;
    c=getchar();
    if (c!='\n' && c!=' ') ungetc(c,stdin);
    while ((c=getchar())!='/') {
        s[i++]=c;
    }
    s[i]='\0';
}

int main() {

    map < pair<int, string> , double> accs;

    int A;

    while(scanf("%d",&A),A) {
        accs.clear();
        char str[200];
        int bnk;
        double am;
        for (int i=0;i<A;i++) {
            getstr(str);
            scanf("%d %lf ",&bnk,&am);
            string s(str);
            accs.insert(make_pair( make_pair(bnk,s), am ));

        }

        while (1) {
            char str[200];
            scanf("%s",str);
            if (str[0]=='e') {
                printf("end\n\n");
                break;
            }
            if (str[0]=='c') {
                char str[200];
                int bnk;
                getstr(str);
                scanf("%d",&bnk);
                string s(str);
                printf("create: ");
                if (accs.find(make_pair(bnk,s))==accs.end()) {
                    accs.insert(make_pair( make_pair(bnk,s), 0.0 ));
                    printf("ok\n");
                } else {
                    printf("already exists\n");
                }
            }
            if (str[0]=='d') {
                char str[200];
                int bnk;
                double am;
                getstr(str);
                scanf("%d %lf",&bnk,&am);
                string s(str);
                printf("deposit %1.2lf: ",am);
                if (accs.find(make_pair(bnk,s))==accs.end()) {
                    printf("no such account\n");
                } else {
                    accs[make_pair(bnk,s)]+=am;
                    printf("ok\n");
                }
            }
            if (str[0]=='w') {
                char str[200];
                int bnk;
                double am;
                getstr(str);
                scanf("%d %lf",&bnk,&am);
                string s(str);
                printf("withdraw %1.2lf: ",am);
                if (accs.find(make_pair(bnk,s))==accs.end()) {
                    printf("no such account\n");
                } else {
                    if (accs[make_pair(bnk,s)]>=am) {
                        accs[make_pair(bnk,s)]-=am;
                        printf("ok\n");
                    } else {
                        printf("insufficient funds\n");
                    }
                }
            }
            if (str[0]=='t') {
                char str[200];
                char str2[200];
                int bnk;
                double am;
                int bnk2;
                getstr(str);
                scanf("%d",&bnk);
                getstr(str2);
                scanf("%d %lf",&bnk2,&am);
                string s(str);
                string s2(str2);
                printf("transfer %1.2lf: ",am);
                if (accs.find(make_pair(bnk,s))==accs.end() || accs.find(make_pair(bnk2,s2))==accs.end() )  {
                    printf("no such account\n");
                } else if (s.compare(s2)==0) {
                    printf("same account\n");
                } else if (accs[make_pair(bnk,s)]>=am) {
                    accs[make_pair(bnk,s)]-=am;
                    accs[make_pair(bnk2,s2)]+=am;         
                    if (bnk==bnk2)
                        printf("ok\n");
                    else
                        printf("interbank\n");
                } else {
                    printf("insufficient funds\n");
                }

            }

        }



    }
    printf("goodbye\n");
    
    return 0;
}