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蒟蒻70求助
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失败尽常态楼主2021/10/15 14:57
#include<iostream>
#include<cstdio>
#include<cmath>
#include<algorithm>
using namespace std;
string s;
double c,h,o;
double x,y,xx,yy;
int main()
{
	getline(cin,s);
	int l=s.length();
	for(int i=0;i<l;i++){
		if(s[i]=='C'){
			if(s[i+1]<='9'&&s[i+1]>=1){
				int k=s[++i]-'0';
				while(s[++i]<='9'&&s[i]>='1'){
					k=k*10+s[i]-'0';
				}
				c+=k;
			}			
			else c++;
		}
		if(s[i]=='O'){
			if(s[i+1]<='9'&&s[i+1]>=1){
				int k=s[++i]-'0';
				while(s[++i]<='9'&&s[i]>='1'){
					k=k*10+s[i]-'0';
				}
				o+=k;
			}
			else o++;
		}
		if(s[i]=='H'){
			if(s[i+1]<='9'&&s[i+1]>=1){
				int k=s[++i]-'0';
				while(s[++i]<='9'&&s[i]>='1'){
					k=k*10+s[i]-'0';
				}
				h+=k;
			}
			else h++;
		}
	}
	x=1;
	xx=c;
	yy=h/2; //氧的总个数 
	y=(xx*2+yy-o)/2; //氧气的化学计量数 
	while(y!=floor(y)||yy!=floor(yy)){
		x*=2,y*=2,xx*=2,yy*=2;
	}
	
	cout<<xx<<" "<<yy;
	return 0;
}
2021/10/15 14:57
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