oj.uz

Submission #309813

# Submission time Handle Problem Language Result Execution time Memory
309813 2020-10-04T15:05:33 Z updown1 Automobil (COCI17_automobil) C++17
0 / 100
 22 ms 16128 KB 
/*
Code by @marlov       
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<long long,long long> pi;
 
#define maxV 1000002
#define MOD 1000000007
//const long long MOD=1000000007;
long long N,M,K;
long long sum=0;
unordered_set<long long> cols;
unordered_set<long long> rows;
long long cm[maxV];
long long rm[maxV];
 
long long qsum(long long T,long long s,long long e){
	if(T%2==0) return ((T/2)*(s+e))%MOD;
	else return (((s+e)/2)*(T))%MOD;
}
 
void add(long long v){
	sum+=v;
	sum%=MOD;
	while(sum<0) sum+=MOD;
}
void sub(long long v){
	sum-=v;
	sum%=MOD;
	while(sum<0) sum+=MOD;
}
void mult(long long v){
	sum*=v;
	sum%=MOD;
}
 
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin>>N>>M>>K;
	fill(cm,cm+maxV,1);
	fill(rm,rm+maxV,1);
	char c;
	long long x,m;
	for(long long i=0;i<K;i++){
		cin>>c>>x>>m;
		x--;
		if(c=='R'){
			rows.insert(x);
			rm[x]*=m;
			rm[x]%=MOD;
		}else if(c=='S'){
			cols.insert(x);
			cm[x]*=m;
			cm[x]%=MOD;
		}
	}
	for(long long i=0;i<N;i++){
		add(rm[i]*(qsum(M,i*M+1,i*M+M)));
		//sum+=MOD;
	}
	//cout<<"1st: "<<sum<<'\n';
	for(long long i:cols){
		//cout<<(qsum(N,i+1,(N-1)*M+i+1))<<'\n';
		add((cm[i]-1)*(qsum(N,i+1,(N-1)*M+i+1)));
		//sum+=MOD;
	}
	//cout<<"2nd: "<<sum<<'\n';
	for(long long i:cols){
		for(long long j:rows){
			long long cv=M*j+i+1;
			sub((cm[i]+rm[j]-1)*cv);
			//sum+=MOD;
          assert(sum >= 0);
			add((cm[i]*rm[j])*cv);
		}
	}
	cout<<sum<<'\n';
    return 0;
}
 
/* stuff you should look for
	* long long overflow, array bounds
	* special cases (n=1,n=0?)
	* do smth instead of nothing and stay organized
*/

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 16000 KB Output isn't correct
2 Incorrect 10 ms 16000 KB Output isn't correct
3 Incorrect 10 ms 16032 KB Output isn't correct
4 Incorrect 13 ms 16000 KB Output isn't correct
5 Incorrect 10 ms 16000 KB Output isn't correct
6 Incorrect 10 ms 16028 KB Output isn't correct
7 Incorrect 11 ms 16000 KB Output isn't correct
8 Incorrect 15 ms 16000 KB Output isn't correct
9 Incorrect 10 ms 16000 KB Output isn't correct
10 Incorrect 13 ms 16000 KB Output isn't correct
11 Incorrect 12 ms 16000 KB Output isn't correct
12 Incorrect 17 ms 16000 KB Output isn't correct
13 Incorrect 11 ms 16128 KB Output isn't correct
14 Incorrect 19 ms 16000 KB Output isn't correct
15 Incorrect 20 ms 16000 KB Output isn't correct
16 Incorrect 22 ms 16000 KB Output isn't correct
17 Incorrect 19 ms 16000 KB Output isn't correct
18 Incorrect 19 ms 16108 KB Output isn't correct
19 Incorrect 20 ms 16112 KB Output isn't correct
20 Incorrect 22 ms 16020 KB Output isn't correct