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Create 1975. Maximum Matrix Sum #642

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Nov 24, 2024
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Create 1975. Maximum Matrix Sum #642

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19 changes: 19 additions & 0 deletions 1975. Maximum Matrix Sum
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Original file line number Diff line number Diff line change
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class Solution {
public:
long long maxMatrixSum(vector<vector<int>>& matrix) {
long long ans = 0;
int min_num = INT_MAX;
int neg = 0;

for(auto i : matrix) {
for(int j : i) {
if(j < 0) neg++;
min_num = min(min_num, abs(j));
ans += abs(j);
}
}

if(neg%2==0) return ans;
else return ans-2*min_num;
}
};
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