80分求调

#include <bits/stdc++.h>
#include <limits.h>
using namespace std;
int main(){
    string s;
    cin>>s;
    bool flag=true;
    for(int i=0;i<s.size();i++){
        if((s[i]>='a'&&s[i]<='z')||(s[i]>='A'&&s[i]<='Z')){
            flag=false;
        }
    }
    if(s.size()>20){
        flag=false;
        cout<<"string"<<endl;
        return 0;
    }
    if(flag==true){
        if(s.size()<=10&&std::stoll(s)<=INT_MAX&&std::stoll(s)>=INT_MIN){
            cout<<"int"<<endl;
        }
        if(s[0]!='-'&&s.size()<=10&&std::stoll(s)<=numeric_limits<unsigned int>::max()&&std::stoll(s)>=0){
            cout<<"unsigned int"<<endl;
        }
        if(s.size()<=19&&std::stoll(s)<=LONG_LONG_MAX&&std::stoll(s)>=LONG_LONG_MIN){
            cout<<"long long"<<endl;
        }
        if(s[0]!='-'&&s.size()<=19&&std::stoll(s)<=numeric_limits<unsigned long long>::max()&&std::stoll(s)>=0){
            cout<<"unsigned long long"<<endl;
        }
    }
    cout<<"string"<<endl;
    return 0;
}