#include <iostream>
#include <vector>
#include <queue>
#include <algorithm>
using namespace std;
//ifstream cin("a.in");
//ofstream cout("a.out");
long long inf=1e9+10;
struct node
{
long long layer,sum,bitipref,lst,rghtbord,biti;
// node(int a,int b,int c,int d,int e) : layer(a),sum(b),bitipref(c),lst(d),rghtbord(e){}
};
struct cmp
{
bool operator()(node a,node b)
{
return a.sum>b.sum;
}
};
priority_queue<node,vector<node>,cmp>pq;
vector<long long >arr;
vector<long long >adj[200005];
long long cost[200005];
vector<long long>ord;
bool cmp2(long long a,long long b)
{
return cost[a]<cost[b];
}
int y[200005];
int x[200005];
int init[200005];
node skip(node curr)
{
int g,g2;
g=ord[curr.layer];
g2=ord[curr.layer+1];
curr.sum=curr.sum-adj[g][curr.lst]+adj[g][curr.lst-1];
curr.layer++;
curr.biti=x[g2];
curr.lst=x[g2];
curr.bitipref=x[g2]-1;
curr.rghtbord=adj[g2].size()-1;
curr.sum=curr.sum+adj[g2][curr.lst]-adj[g2][curr.lst-1];
return curr;
}
node godown(node curr)
{
int g,g2;
g=ord[curr.layer];
g2=ord[curr.layer+1];
curr.layer++;
curr.biti=x[g2];
curr.lst=x[g2];
curr.bitipref=x[g2]-1;
curr.rghtbord=adj[g2].size()-1;
curr.sum=curr.sum+adj[g2][curr.lst]-adj[g2][curr.lst-1];
return curr;
}
node shift(node curr)
{
int g;
g=ord[curr.layer];
curr.lst++;
curr.sum=curr.sum+adj[g][curr.lst]-adj[g][curr.lst-1];
return curr;
}
node fixborderandshift(node curr)
{
int g;
g=ord[curr.layer];
curr.rghtbord=curr.lst-1;
curr.lst=curr.bitipref;
curr.sum=curr.sum+adj[g][curr.lst]-adj[g][curr.lst-1];
return curr;
}
node fixborderandcreate(node curr)
{
int g;
g=ord[curr.layer];
curr.rghtbord=curr.lst-1;
curr.lst=0;
curr.biti++;
curr.sum=curr.sum+init[g];
return curr;
}
signed main()
{
long long n,m,k,i,a,b;
long long sum=0;
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin>>n>>m>>k;
for(i=1; i<=n; i++)
{
cin>>a>>b;
adj[a].push_back(b);
}
long long imp=0,minim=inf,poz=m;
for(i=1; i<=m; i++)
{
cin>>x[i]>>y[i];
if(y[i]==0)
{
cost[i]=inf;
}
else
{
if(x[i]==0)
{
adj[i].push_back(0);
}
sort(adj[i].begin(),adj[i].end());
if(adj[i].size()<x[i])
{
for(long long j=1; j<=k; j++)
{
cout<<-1<<'\n';
}
return 0;
}
int vkuk=adj[i][0];
init[i]=adj[i][0];
for(int j=0; j<adj[i].size(); j++)
{
if(j+1<=x[i])
{
sum+=adj[i][j];
}
adj[i][j]-=vkuk;
}
if(adj[i].size()==x[i])
{
cost[i]=inf;
}
else
{
cost[i]=adj[i][x[i]];
}
}
ord.push_back(i);
}
sort(ord.begin(),ord.end(),cmp2);
m--;
for(i=0; i<ord.size(); i++)
{
if(cost[ord[i]]==inf)
{
m=i-1;
break;
}
}
node curr,curr2;
cout<<sum<<'\n';
k--;
if(m>=0)
{
int g=ord[0];
curr.layer=0;
curr.sum=adj[g][x[g]]-adj[g][x[g]-1];
curr.bitipref=x[g]-1;
curr.lst=x[g];
curr.rghtbord=adj[g].size()-1;
curr.biti=x[g];
pq.push(curr);
while(pq.size() && k && imp==0)
{
curr=pq.top();
pq.pop();
k--;
cout<<curr.sum+sum<<'\n';
g=ord[curr.layer];
if(curr.lst==x[g] && curr.bitipref==x[g]-1 && curr.biti==x[g] && curr.layer+1<=m)
{
curr2=skip(curr);
pq.push(curr2);
}
if(curr.lst+1<=curr.rghtbord)
{
curr2=shift(curr);
pq.push(curr2);
}
if(curr.bitipref>=1 && curr.lst>=curr.bitipref+1)
{
curr2=fixborderandshift(curr);
pq.push(curr2);
}
if(curr.bitipref==0 && curr.lst>=1 && curr.biti+1<=y[g])
{
curr2=fixborderandcreate(curr);
pq.push(curr2);
}
if(curr.layer+1<=m)
{
curr2=godown(curr);
pq.push(curr2);
}
/*
if(curr.lst==1 && curr.layer+1<=m)
{
curr2=curr;
curr2.layer++;
curr2.biti=1;
curr2.sum=curr2.sum-adj[ord[curr.layer]][1]+adj[ord[curr.layer+1]][1];
pq.push(curr2);
}
if(curr.layer+1<=m)
{
curr2=curr;
curr2.layer++;
curr2.lst=1;
curr2.biti=1;
curr2.sum=curr2.sum+adj[ord[curr.layer+1]][1];
pq.push(curr2);
}
if(adj[ord[curr.layer]].size()>curr.lst+1 && curr.biti+1<=y[ord[curr.layer]])
{
curr2=curr;
curr2.lst++;
curr2.biti++;
curr2.sum+=adj[ord[curr.layer]][curr2.lst];
pq.push(curr2);
}
if(adj[ord[curr.layer]].size()>curr.lst+1)
{
curr2=curr;
curr2.sum=curr.sum-adj[ord[curr.layer]][curr.lst]+adj[ord[curr.layer]][curr.lst+1];
curr2.lst++;
pq.push(curr2);
}*/
}
}
while(k)
{
k--;
cout<<-1<<'\n';
}
return 0;
}
/*
5 2 7
1 5
1 3
2 3
1 6
2 1
1 1
1 1*/
