//单行示例
while(line=readline()){
var lines = line.split(' ');
var a = parseInt(lines[0]);
var b = parseInt(lines[1]);
function add(m,n){
return m+n;
}
print(add(a,b));
}
//多行示例
var n = parseInt(readline());
var ans = 0;
for(var i = 0;i < n; i++){
lines = readline().split(" ")
for(var j = 0;j < lines.length; j++){
ans += parseInt(lines[j]);
}
print(ans);
}
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