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- #include <cstdio>
- #include <algorithm>
- #include <iostream>
- #include <cmath>
- #include <cstring>
- #include <map>
- #include <string>
- #include <vector>
- #include <queue>
- using namespace std;
- int main()
- {
- int n,m;
- scanf("%d%d",&n,&m);
- int all=n*10+m;
- printf("%d",all/19);
- return 0;
- }
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