鑑於我的水平之低，現行luogu出發！?let's go!

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水題p1089

#include<iostream>

int main(){
    int money=0,cunchu=0;
    for(int i=1;i<=12;i++){
        money+=300;
        int cost;
        std::cin>>cost;
        money-=cost;
        if(money<0){std::cout<<"-"<<i;return 0;}
        cunchu
 
+=(money-(money%100));
        money-=(money-(money%100));
    }
    money+=cunchu*12/10;
    std::cout<<money;
    return 0;
}