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1082C- Multi-Subject Competition.cpp
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1082C- Multi-Subject Competition.cpp
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#include<bits/stdc++.h>
using namespace std;
//{
#define si(a) scanf("%d",&a)
#define sii(a,b) scanf("%d %d",&a,&b);
#define siii(a,b,c) scanf("%d %d %d",&a,&b,&c);
#define sl(a) scanf("%lld",&a)
#define sll(a,b) scanf("%lld %lld",&a,&b);
#define slll(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define outi(a) printf("%d\n",a)
#define outii(a,b) printf("%d %d\n",a,b)
#define outis(a) printf(" %d",a)
#define outl(a) printf("%lld\n",a)
#define outll(a,b) printf("%lld %lld\n",a,b)
#define outls(a) printf(" %lld",a)
#define cel(n,k) ((n-1)/k+1)
#define sets(a) memset(a, -1, sizeof(a))
#define clr(a) memset(a, 0, sizeof(a))
#define max(a,b) ((a)>(b)? (a):(b))
#define min(a,b) ((a)<(b)? (a):(b))
#define fr(n) for(int i=0;i<n;i++)
#define fr1(n) for(int i=1;i<=n;i++)
#define pb push_back
#define all(v) v.begin(),v.end()
#define mp make_pair
#define ff first
#define ss second
#define INF 10000007
#define fastIO() ios_base::sync_with_stdio(false); cin.tie(NULL);
typedef long long i64;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<long long,long long> pll;
//}
vector<int> v[100005];
int n, s, x, r;
int sum[100005];
int main(){
sii(n,s);
fr1(100002){
v[i].pb(0);
}
fr1(n) {
sii(x,r);
v[x].pb(r);
}
fr1(s)
sort(v[i].begin()+1,v[i].end(),greater<int>());
fr1(s){
for(int j=1; j<v[i].size(); j++){
v[i][j]+= v[i][j-1];
if(v[i][j]>0)
sum[j]+= v[i][j];
}
}
int maxi= 0;
fr1(n)
maxi= max(sum[i],maxi);
outi(maxi);
}