Problem: A programming competition site _AtCode_ provides algorithmic problems. Each problem is allocated a score based on its difficulty. Currently, for each integer i between 1 and D (inclusive), there are p_i problems with a score of 100i points. These p_1 + … + p_D problems are all of the problems available on AtCode.  A user of AtCode has a value called _total score_. The total score of a user is the sum of the following two elements:    * Base score: the sum of the scores of all problems solved by the user.   * Perfect bonuses: when a user solves all problems with a score of 100i points, he/she earns the perfect bonus of c_i points, aside from the base score (1 ≤ i ≤ D).  Takahashi, who is the new user of AtCode, has not solved any problem. His objective is to have a total score of G or more points. At least how many problems does he need to solve for this objective?

Submission attempts (in order):
#3
d,g = map(int,input().split())
lista = []
for i in range(d):
    lista.append([])
    p,c = map(int,input().split())
    lista[i] = [p,c]
    
def search(allcomp,notouch,touch,rem,toachiev,ps):
    
    
    
    
    
    
    if touch != []:
        
        point = (touch[0] + 1)*100
        problems = lista[touch[0]][0]
        vnus =  lista[touch[0]][1]
        #print(point,problems,vnus)
        if toachiev == 0:
            return ps
        else:
            needproblems = toachiev//point
            if toachiev%point != 0:
                needproblems += 1
                
            if needproblems<=problems:
                return ps+needproblems
            else:
                if point*problems + vnus >= toachiev:
                    return ps+problems
                else:
                    return 10**9
                
    else:
        if len(rem)==1:
            if toachiev == 0:
                return ps
            else
                rempoint = (rem[0] + 1)*100
                notouchpoint_max = 0
                if notouch != []:
                    notouchpoint_max = (max(notouch) + 1)*100

                if notouchpoint_max <= rempoint:
                    return search(allcomp,notouch,rem,[],toachiev,ps)
                else:
                    return 10**9
        else:
            if toachiev == 0:
                return ps
            else:
                minp = 10**9
                for i in range(len(rem)):
                    allcomp_t,notouch_t,rem_t,toachiev_t,ps_t = list(allcomp),list(notouch),list(rem),toachiev,ps
                    allcomp_t.append(rem[i])
                    rem_t = rem[:i]+rem[i+1:]
                    toachiev_t = toachiev_t - (rem[i] + 1)*100*lista[rem[i]][0] - lista[rem[i]][1]
                    if toachiev_t <0:
                        toachiev_t = 0
                    ps_t = ps_t + lista[rem[i]][0]
                    case1 = search(allcomp_t,notouch_t,[],rem_t,toachiev_t,ps_t)

                    allcomp_t,notouch_t,rem_t,toachiev_t,ps_t = list(allcomp),list(notouch),list(rem),toachiev,ps
                    notouch_t.append(rem[i])
                    rem_t = rem[:i]+rem[i+1:]
                    case2 = search(allcomp_t,notouch_t,[],rem_t,toachiev_t,ps_t)
                    #print(case1,case2)
                    if minp > min(case1,case2):
                        minp = min(case1,case2)
                    
            return minp
                
        
        
        
        
makerem = []
for i in range(d):
    makerem.append(i)
    
print(search([],[],[],makerem,g,0))

d,g = map(int,input().split())
p = []
c = []
for i in range(d):
    tp,tc = map(int,input().split())
    p.append(tp)
    c.append(tc)
ans = 1<<50
for i in range(1<<d):
    score = 0
    count = 0
    zero_list = []
    for j in range(d):
        if ((i >> j) & 1):
            score += c[j] + p[j]*(j+1)*100 
            count += p[j]
        else:
            zero_list.append(j)
    if score >= g:
        ans = min(ans,count)
    else:
        rem = g-score
        if rem <= (p[max(zero_list)]-1)*(max(zero_list)+1)*100:
            for i in range(1,p[max(zero_list)]):
                if rem - i*(max(zero_list)+1)*100 <= 0:
                    count +=  i
                    ans = min(ans,count)
                    break
print(ans)


Verdicts: Runtime Error

Accepted