Football (UVa 12673, UVaLive 6530, Regionals 2013 >> Latin America)

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/// Raihan Ruhin /// CSE, Jahangirnagar University. /// Dhaka-Bangladesh. /// id: raihanruhin (topcoder / codeforces / codechef / uva ), 3235 (lightoj) /// mail: raihanruhin@ (yahoo / gmail / facebook) /// blog: ruhinraihan.blogspot.com #include<bits/stdc++.h> using namespace std; #define SET(a) memset(a,-1,sizeof(a)) #define CLR(a) memset(a,0,sizeof(a)) #define PI acos(-1.0) #define MOD 1000000007 #define MX 100010 struct match{ int score, receive; bool operator < (const match &m) const{ return m.score-m.receive < score-receive ; } }; match mth[MX]; int main() { ios_base::sync_with_stdio(0);cin.tie(0); int tc,kk=1, n, g; //cin>>tc; while(cin>>n>>g) { for(int i=0;i<n;i++) cin>>mth[i].score>>mth[i].receive; sort(mth, mth+n); int point = 0; for(int i=0;i<n;i++) { //cout<<mth[i].score<<" "<<mth[i].receive<<endl; if(mth[i].score>mth[i].receive) point += 3; else if(mth[i].score==mth[i].receive) { if(g>0) { point += 3; g--; } else point += 1; } else if(mth[i].score<mth[i].receive) { if(g>(mth[i].receive-mth[i].score)) { point += 3; g= g-(mth[i].receive-mth[i].score)-1; } else if(g==(mth[i].receive-mth[i].score)) { point += 1; g= g-(mth[i].receive-mth[i].score); } } } cout<<point<<endl; } return 0; }