题解 | #小美的外卖订单编号#

分类讨论题。

#include<bits/stdc++.h>
#define int long long
#define double long double
#define x first
#define y second
using namespace std;
typedef long long LL;
typedef long long ll;
typedef pair<int,int> PII;
const int N=3e5+10;
const int M=1e3+10;
int mod=1e9+7;
int a[N];

void solve(){
    int m,x;cin>>m>>x;
    if(x%m==0) cout<<m<<"\n";
    else cout<<x%m<<"\n";
}

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0),cout.tie(0);
    int _;
    _=1;
    cin>>_;
    while(_--){
        solve();
    }
}