救救孩子吧，死活过不去这#8和#10

#8报错信息：

Wrong Answer.wrong answer On line 1 column 11, read 0, expected .

#10报错信息

Wrong Answer.wrong answer On line 1 column 18, read 0, expected .

都是多输出了一个零。

code

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
ll findnum(string s) {
	ll n = 0; bool e = false;
	for (auto& x : s)
		if (isdigit(x))
			n = n * 10 + (x - '0'), e = true;
		else if (e)break;
	return n;
}
string itos(ll n) {
	string ls;
	if (n == 0) { ls.push_back('0'); return ls; }
	while (n) {
		ls.push_back(n % 10 + '0');
		n /= 10;
	}
	reverse(ls.begin(), ls.end());
	return ls;
}
ll strtoll(string s) {
	ll n = 0;
	for (auto& x : s)n = n * 10 + (x - '0');
	return n;
}
int main() {
	ios::sync_with_stdio(0);
	string str, str2, str3, strnum, frt, nxt, frt2, nxt2;
	vector<pair<string, string>>da; char ls = 0; ll num = -1, cnt = 0, f = 0;
	bool xy = true;
	cin >> str; while (str.size() >= 2 && str.back() != '.') { str2.push_back(str.back()); str.pop_back(); }
	if (str.back() == '.')str.pop_back(); reverse(str2.begin(), str2.end());
	if (str=="1" || str=="0")xy = false, num = str[0] - '0';
	for (auto& x : str)if (isdigit(x))f = 1;
	if (!f)for (auto& x : str2)if (isdigit(x))f = 2;
	for (auto& x : str3)if (isdigit(x))f = 2;
	if (xy && !(num = findnum(str))) { while (isdigit(str.back()))str.pop_back(); }if (xy)cin >> str3;
	if (xy && num == -1 && !(num = findnum(str2))) { while (isdigit(str2.back()))str2.pop_back(); }
	if (xy) {
		while (isdigit(str.back()))strnum.push_back(str.back()), str.pop_back();
		reverse(strnum.begin(), strnum.end());
		num = strtoll(strnum); cnt = num;
	}
	if (num == 1 || num == 0)cnt = num;
	if (xy) while (!cin.fail()) {
		cin >> frt >> nxt;
		if (!cin.fail()) {
			frt2 += str; nxt2 += str;
			if (f == 1)frt2 += itos(cnt), nxt2 += itos(cnt);
			frt2.push_back('.'), nxt2.push_back('.');
			frt2 += str2; nxt2 += str3;
			if (f == 2)frt2 += itos(cnt);
			da.push_back(pair<string, string>(frt2, nxt2));
			frt2.clear(); nxt2.clear(); ++cnt;
		}
		else break;
	}
	else while (!cin.fail()) {
		int i = 0, j = 0;
		cin >> frt >> nxt;
		if (!cin.fail()) {
			for (i = 0; i < frt.size(); i++) if (!isdigit(frt[i]))frt2.push_back(frt[i]); else break;
			for (j = 0; j < nxt.size(); j++) if (!isdigit(nxt[j]))nxt2.push_back(nxt[j]); else break;
			frt2 += itos(cnt); nxt2 += itos(cnt);
			while (i + 1 < frt.size() && isdigit(frt[i]))++i;
			while (j + 1 < nxt.size() && isdigit(nxt[i]))++j;
			for (i; i < frt.size(); i++)if (!isdigit(frt[i]))frt2.push_back(frt[i]);
			for (j; j < nxt.size(); j++)if (!isdigit(nxt[j]))nxt2.push_back(nxt[j]);
			da.push_back(pair<string, string>(frt2, nxt2));
			frt2.clear(); nxt2.clear(); ++cnt;
		}
		else break;
	}
	for (auto& x : da)cout << x.first << " " << x.second << endl;
	return 0;
}

标程

#include <cstdio>
#include <string>
#include <iostream>
using namespace std;
char sum;
string a,b;
int num;
int main(){
    cin>>sum;//输入第一个字符（注意不是字符串）
    if(sum=='1'||sum=='0'){//情况①
        num=sum-'0';//第一个数字
        while(cin>>a>>b){
            for(int i=0;i<a.size();i++){
                if(a[i]>='0'&&a[i]<='9'){
                    if(i==a.size()-1||a[i+1]<'0'||a[i+1]>'9')cout<<num;//数字的最后一位数，输出num
                }
                else cout<<a[i];//不是数字
            }
            cout<<" ";
            for(int i=0;i<b.size();i++){
                if(b[i]>='0'&&b[i]<='9'){
                    if(i==b.size()-1||b[i+1]<'0'||b[i+1]>'9')cout<<num;
                }
                else cout<<b[i];
            }//同上
            cout<<endl;
            num++;//记得要num++
        }
    }
    else{//情况②
        a="";a+=sum;//因为先前输入了sum,所以要把sum放在文件名的最前面
        cin>>b;a+=b;//a此刻是完整的文件名+输入后缀
        cin>>b;//输出后缀
        int num1=0;//num1在这里等同于上面的num
        bool p1=false,p2=false,p=false;//p是判断现在处于文件名还是后缀名中，p1表示数字在文件名后，p2表示数字在后缀名后
        for(int i=0;i<a.size();i++){
            if(a[i]>='0'&&a[i]<='9'){
                num1=num1*10+a[i]-'0';//求第一个输出的数字
                if(p==false)p1=true;
                else p2=true;
            }
            if(a[i]=='.')p=true;//改变p
        }
        for(int i=0;i<b.size();i++){
            if(b[i]>='0'&&b[i]<='9')p1=true;
        }//同上
        string m1,m2,wjm="",tzsr="",tzsc="";
        int i;
        for(i=0;i<a.size();i++){
            if(a[i]=='.')break;
            if(a[i]>'9'||a[i]<'0')wjm+=a[i];
        }
        for(i;i<a.size();i++){
            if(a[i]!='.'&&(a[i]>'9'||a[i]<'0'))tzsr+=a[i];
        }
        for(int j=0;j<b.size();j++)
        if(b[j]>'9'||b[j]<'0')tzsc+=b[j];
        //以上为分解文件名，输入后缀和输出后缀
        while(cin>>m1>>m2){
            cout<<wjm;
            if(p1==true)cout<<num1;//文件名后数
            cout<<"."<<tzsr;
            if(p2==true)cout<<num1;//后缀名后数
            cout<<" "<<wjm;
            if(p1==true)cout<<num1,num1++;//同上，注意num1++
            cout<<"."<<tzsc;
            if(p2==true)cout<<num1,num1++;//同上，注意num1++
            cout<<endl;
        }
    }
}

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