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303 B

#include <bits/stdc++.h>
using namespace std;
/*
小红    小明
今年  a b
b 1/3*a
3*b-30 a
b-a=1/3a-b
2b=4/3a
b=2/3a
a-3b+30=b-a
2a=4b-30
2a=4(2/3a)-30
a=4/3a-15
15=1/3a
a=45
b=30
*/
int main() {
return 0;
}