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#define ll long long class Solution { public: long long flowerGame(int n, int m) { ll odd1=0,even1=0,even2=0,odd2=0; for(int i=1;i<=n;i++){ if(i%2==0) even1++; else odd1++; } for(int i=1;i<=m;i++){ if(i%2==0) even2++; else odd2++; } ll sum=odd1*even2 + even1*odd2; return sum; } };
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