Python题解 | #合并表记录#

while True:
    try:
        a = {}
        b = int(input())
        c = set()
        for _ in range(b):
            st1 = input().split(" ")
            x = int(st1[0])
            y = int(st1[1])
            if x not in c:
                c.add(x)
                a[x] = y
            else:
                a[x] = a[x] + y
        res = sorted(a.keys(), reverse=False)

        for i in res:
            print(i, a[i])
    except:
        break