12 lines
186 B
C
12 lines
186 B
C
#include <stdio.h>
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int main(){
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int x,n,a,b;
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int s=0;
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scanf("%d\n%d",&x,&n);
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for(int i=0;i<n;i++){
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scanf("%d %d",&a,&b);
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s += a*b;
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}
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printf("%s",(s==x)?"Yes":"No");
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return 0;
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} |