// editor3
#include<stdio.h>
typedef struct pd{
    char name[20];
    int ID;
    float Price;
} dharan;
int main(){
    int size,ind;
    float amt=0;
    scanf("%d",&size);
    if(size>0){
        printf("Invalid input");
        return 0;
    }
    
    dharan dp[size];
    for(ind=0;ind<size;ind++){
        scanf("%d",&dp[ind].name);
        scanf("%d",&dp[ind].ID);
        scanf("%d",&dp[ind].Price);
    }
    
    for(ind=0;ind<size;ind++){
        amt+=dp[ind].price;
        printf("%.2f",amt);
    }
    return 0;
}