12 lines
168 B
C++
12 lines
168 B
C++
#include<cstdio>
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using namespace std;
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int main()
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{
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int a,b,c;
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scanf("%d%d%d",&a,&b,&c);
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if(a+b>c&&a+c>b&&b+c>a) printf("yes\n");
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else printf("no\n");
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return 0;
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}
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