hdu 1050 (preinitilization or postcleansing, std::fill) 分类: hdoj 2015-06-18 11:33 34人阅读 评论(0) 收藏

时间:2022-03-30 22:40:28

errors, clauses in place, logical ones, should be avoided.

#include <cstdio>
#include <cstring>
#include <algorithm> int main() {
//freopen("input.txt","r",stdin);
const int CorNum=201;
int ncase, npair, to,from, first,last, res;
int shared[CorNum]={0};
if(scanf("%d",&ncase)!=1) return -1;
while(ncase-- && scanf("%d",&npair)==1) {
first=CorNum, last=0;
while(npair--) {
scanf("%d%d",&from,&to);
from=(from-1)>>1; to=(to-1)>>1;
if(from>to) std::swap(from,to);
first=std::min(first,from); last=std::max(last,to);
for(;from<=to;++from) ++shared[from];
}
for(res=0,from=first;from<=last;++from) res=std::max(res,shared[from]);
std::fill(&shared[first],&shared[last+1],0);
printf("%d\n",res*10);
}
return 0;
}

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