15 lines
239 B
C++
15 lines
239 B
C++
#include<cstdio>
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#include<algorithm>
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using namespace std;
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int n,x,y,res;
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int main()
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{
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#ifdef local
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freopen("pro.in","r",stdin);
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#endif
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scanf("%d",&n);
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while(n-->0) scanf("%d%d",&x,&y),res=max(res,x+y);
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printf("%d\n",res);
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return 0;
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}
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