52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
#include <iostream>
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#include <iomanip>
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#include <fstream>
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#include <sstream>
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#include <algorithm>
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#include <string>
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#include <set>
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#include <utility>
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#include <queue>
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#include <stack>
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#include <list>
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#include <vector>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <cmath>
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#include <ctime>
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#include <ctype.h>
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using namespace std;
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#define MAXN 1100
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typedef struct kind
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{
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int num,price;
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}Kind;
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Kind kind[MAXN];
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int sum[MAXN];
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int ans[MAXN];
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int main()
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{
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int t;
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int i,j;
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int n;
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scanf("%d",&t);
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while(t--)
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{
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scanf("%d",&n);
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sum[0]=0;
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memset(ans,0,sizeof(ans));
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for(i=1;i<=n;i++)
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{
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scanf("%d%d",&kind[i].num,&kind[i].price);
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sum[i]=sum[i-1]+kind[i].num;
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ans[i]=(sum[i]+10)*kind[i].price;
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}
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for(i=1;i<=n;i++)
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for(j=1;j<=i;j++)
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ans[i]=min(ans[i],(sum[i]-sum[j]+10)*kind[i].price+ans[j]);
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printf("%d\n",ans[n]);
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}
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return 0;
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}
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