Created
August 29, 2015 02:57
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#include <bits/stdc++.h> | |
#define REP(i,n) for(int i=0;i<(int)(n);i++) | |
#define ALL(x) (x).begin(),(x).end() | |
using namespace std; | |
typedef long long ll; | |
const ll INF = 1e14; | |
int S, N, M; | |
ll P[2048], sum[2048]; | |
pair<ll,int> memo[2048][2048]; | |
ll range(int i, int j) { return P[j] * (j - i) - sum[j] + sum[i]; } | |
pair<ll,int> dp(int n, int m) { | |
if (m == -1) return make_pair(INF, 0); | |
if (n <= m) return make_pair(0, n-1); | |
if (memo[n][m].first != -1) return memo[n][m]; | |
pair<ll,int> res = make_pair(INF, 0); | |
int from = dp(n-1, m).second, to = dp(n, m+1).second; | |
for (int i = from; i <= min(n-1, to); ++i) | |
res = min(res, make_pair(dp(i, m-1).first + range(i, n-1), i)); | |
return memo[n][m] = res; | |
} | |
int main() { | |
cin >> S >> N >> M; | |
vector<int> x(S); | |
REP(i,S) cin >> x[i]; | |
REP(i,N) { | |
int t, p; cin >> t >> p; | |
P[i] = t - x[p-1]; | |
} | |
sort(P, P+N); | |
REP(i,N) sum[i+1] = sum[i] + P[i]; | |
memset(memo, -1, sizeof(memo)); | |
cout << dp(N, M).first << endl; | |
return 0; | |
} |
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