题解 | #合并表记录#
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
let n = ~~readline()
let map = new Map()
let line
let key,num
while(line = readline()){
[key,num] = line.split(' ')
if (map[key]) map[key] += ~~num
else map[key] = ~~num
}
for(let key in map){
console.log(`${key} ${map[key]}`)
}
//也可以用map.entries吧。
let map = new Map()
let line
let key,num
while(line = readline()){
[key,num] = line.split(' ')
if (map[key]) map[key] += ~~num
else map[key] = ~~num
}
for(let key in map){
console.log(`${key} ${map[key]}`)
}
//也可以用map.entries吧。
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