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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
13 lines
262 B
C++
13 lines
262 B
C++
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#include<stdio.h>
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int main(){
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int n;
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while(scanf("%d",&n)&&n){
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if(n==1||n==2){
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printf("%d\n",(n-1)*5); continue;
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}
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else if(n==3) printf("15\n");
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else printf("%d\n",(n*2-4)*5);
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}
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return 0;
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}
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