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08:00:08 am
dp[i]:表示第i个人买完需要的最小时间,转移为dp[i]=min ( dp[i-1]+s[i] , dp[i-2]+d[i] );即前一个人买票和前两个人一起买票的时间花销最小值
#include<bits/stdc++.h> using namespace std; template<class T>inline T read(T&x) { char c; while((c=getchar())<=32)if(c==EOF)return 0; bool ok=false; if(c=='-')ok=true,c=getchar(); for(x=0; c>32; c=getchar()) x=x*10+c-'0'; if(ok)x=-x; return 1; } template<class T> inline T read_(T&x,T&y) { return read(x)&&read(y); } template<class T> inline T read__(T&x,T&y,T&z) { return read(x)&&read(y)&&read(z); } template<class T> inline void write(T x) { if(x<0)putchar('-'),x=-x; if(x<10)putchar(x+'0'); else write(x/10),putchar(x%10+'0'); } template<class T>inline void writeln(T x) { write(x); putchar('\n'); } //-------ZCC IO template------ const int maxn=1e5+1000; const double inf=999999999; #define lson (rt<<1),L,M #define rson (rt<<1|1),M+1,R #define M ((L+R)>>1) #define For(i,t,n) for(int i=(t);i<(n);i++) typedef long long LL; typedef double DB; typedef pair<int,int> P; #define bug printf("---\n"); #define mod 100007 int dp[maxn];//第i个人买完票 需要的最小时间 int s[maxn]; int d[maxn]; int main() { int n,E,F; read(n); while(n--) { int k; read(k); for(int i=1;i<=k;i++) read(s[i]); for(int i=2;i<=k;i++) read(d[i]); memset(dp,0,sizeof(dp)); dp[1]=s[1]; for(int i=2;i<=k;i++) { dp[i]=min(dp[i-1]+s[i],dp[i-2]+d[i]); } int m=dp[k]/60; int h=m/60; int ss=dp[k]%60; m%=60; h+=8; if(h<=12) printf("%02d:%02d:%02d am\n",h,m,ss); else printf("%02d:%02d:%02d pm\n",h-12,m,ss); } return 0; }
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原文地址:http://blog.csdn.net/u013167299/article/details/45228123