Submission #1371017


Source Code Expand

#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

int N,K;
ll A[101010],B[101010];
ll S[101010];
ll dp[101010];

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N>>K;
	FOR(i,N) {
		cin>>A[i]>>B[i];
		if(B[i]==1 && A[i]>K/2) return _P("-1\n");
		if(B[i]==2) assert(0);
		S[i+1]=S[i]+A[i];
	}
	
	y=0;
	for(x=1;x<=N;x++) {
		if(S[x]<=K/2) {
			dp[x]=2*S[x];
		}
		else {
			while(S[x]-S[y]>K/2) y++;
			dp[x]=dp[y]+K;
		}
	}
	/*
	ll mi=1LL<<60;
	for(i=N;i>=0;i--) {
		if(S[N]-S[i]>K/2) continue;
		
		ll cur=S[i];
		ll wait=0;
		for(j=i;j>0;j--) {
			ll L=cur%K,R=(cur+A[j-1])%K;
			if(R<L) R+=K;
			ll x=S[j-1]%K,y=S[j]%K;
			if(y<x) y+=K;
			
			cur+=A[j-1];
			if(L<=y && x<R) {
				cur+=(y-L);
				wait+=(y-L);
			}
			else if(L+K<=y && x<R+K) {
				cur+=(y-(L+K));
				wait+=(y-(L+K));
			}
			else if(L<=y+K && x+K<R) {
				cur+=(y+K-L);
				wait+=(y+K-L);
			}
		}
		mi=min(mi,wait);
		
	}
	*/
	if(S[N]<=K/2) {
		cout<<2*S[N]<<endl;
	}
	else {
		cout<<dp[N-1]+2*A[N-1]<<endl;
	}
	
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n';
	FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	solve(); return 0;
}

Submission Info

Submission Time
Task F - Train Service Planning
User kmjp
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1693 Byte
Status RE
Exec Time 99 ms
Memory 3456 KB

Judge Result

Set Name Sample All subtask subtask2
Score / Max Score 0 / 0 0 / 700 0 / 500 0 / 500
Status
AC × 3
RE × 1
AC × 18
WA × 34
RE × 52
AC × 10
WA × 27
AC × 8
WA × 7
RE × 13
Set Name Test Cases
Sample sample1.txt, sample2.txt, sample3.txt, sample4.txt
All sample1.txt, sample2.txt, sample3.txt, sample4.txt, in1.txt, in10.txt, in101.txt, in102.txt, in103.txt, in104.txt, in105.txt, in106.txt, in107.txt, in108.txt, in109.txt, in11.txt, in110.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in3.txt, in4.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt, sample4.txt, sub2in1.txt, sub2in10.txt, sub2in11.txt, sub2in12.txt, sub2in13.txt, sub2in14.txt, sub2in15.txt, sub2in16.txt, sub2in17.txt, sub2in18.txt, sub2in19.txt, sub2in2.txt, sub2in20.txt, sub2in21.txt, sub2in22.txt, sub2in23.txt, sub2in24.txt, sub2in3.txt, sub2in4.txt, sub2in5.txt, sub2in6.txt, sub2in7.txt, sub2in8.txt, sub2in9.txt, subin1.txt, subin10.txt, subin101.txt, subin102.txt, subin103.txt, subin104.txt, subin105.txt, subin106.txt, subin107.txt, subin108.txt, subin109.txt, subin11.txt, subin12.txt, subin13.txt, subin14.txt, subin15.txt, subin16.txt, subin17.txt, subin18.txt, subin19.txt, subin2.txt, subin20.txt, subin201.txt, subin21.txt, subin22.txt, subin23.txt, subin24.txt, subin3.txt, subin4.txt, subin5.txt, subin6.txt, subin7.txt, subin8.txt, subin9.txt
subtask sample1.txt, sample2.txt, sample3.txt, subin1.txt, subin10.txt, subin101.txt, subin102.txt, subin103.txt, subin104.txt, subin105.txt, subin106.txt, subin107.txt, subin108.txt, subin109.txt, subin11.txt, subin12.txt, subin13.txt, subin14.txt, subin15.txt, subin16.txt, subin17.txt, subin18.txt, subin19.txt, subin2.txt, subin20.txt, subin201.txt, subin21.txt, subin22.txt, subin23.txt, subin24.txt, subin3.txt, subin4.txt, subin5.txt, subin6.txt, subin7.txt, subin8.txt, subin9.txt
subtask2 sample1.txt, sample2.txt, sample3.txt, sample4.txt, sub2in1.txt, sub2in10.txt, sub2in11.txt, sub2in12.txt, sub2in13.txt, sub2in14.txt, sub2in15.txt, sub2in16.txt, sub2in17.txt, sub2in18.txt, sub2in19.txt, sub2in2.txt, sub2in20.txt, sub2in21.txt, sub2in22.txt, sub2in23.txt, sub2in24.txt, sub2in3.txt, sub2in4.txt, sub2in5.txt, sub2in6.txt, sub2in7.txt, sub2in8.txt, sub2in9.txt
Case Name Status Exec Time Memory
in1.txt RE 96 ms 256 KB
in10.txt RE 96 ms 256 KB
in101.txt RE 96 ms 256 KB
in102.txt RE 96 ms 256 KB
in103.txt RE 96 ms 256 KB
in104.txt RE 96 ms 256 KB
in105.txt RE 96 ms 256 KB
in106.txt RE 96 ms 256 KB
in107.txt RE 95 ms 256 KB
in108.txt RE 96 ms 256 KB
in109.txt RE 96 ms 256 KB
in11.txt RE 96 ms 256 KB
in110.txt RE 95 ms 256 KB
in12.txt RE 96 ms 256 KB
in13.txt RE 95 ms 256 KB
in14.txt RE 95 ms 256 KB
in15.txt RE 95 ms 256 KB
in16.txt RE 96 ms 256 KB
in17.txt RE 96 ms 256 KB
in18.txt RE 96 ms 256 KB
in19.txt RE 96 ms 256 KB
in2.txt RE 96 ms 256 KB
in20.txt RE 96 ms 256 KB
in21.txt RE 96 ms 256 KB
in22.txt RE 96 ms 256 KB
in23.txt RE 96 ms 256 KB
in24.txt RE 96 ms 256 KB
in25.txt RE 96 ms 256 KB
in26.txt RE 95 ms 256 KB
in27.txt RE 96 ms 256 KB
in28.txt RE 96 ms 256 KB
in3.txt RE 99 ms 256 KB
in4.txt RE 96 ms 256 KB
in5.txt RE 96 ms 256 KB
in6.txt RE 95 ms 256 KB
in7.txt RE 96 ms 256 KB
in8.txt RE 95 ms 256 KB
in9.txt RE 96 ms 256 KB
sample1.txt AC 1 ms 256 KB
sample2.txt AC 1 ms 256 KB
sample3.txt AC 1 ms 256 KB
sample4.txt RE 95 ms 256 KB
sub2in1.txt RE 96 ms 256 KB
sub2in10.txt WA 1 ms 256 KB
sub2in11.txt AC 1 ms 256 KB
sub2in12.txt WA 1 ms 256 KB
sub2in13.txt AC 1 ms 256 KB
sub2in14.txt WA 1 ms 256 KB
sub2in15.txt RE 96 ms 256 KB
sub2in16.txt RE 96 ms 256 KB
sub2in17.txt RE 98 ms 256 KB
sub2in18.txt RE 96 ms 256 KB
sub2in19.txt RE 95 ms 256 KB
sub2in2.txt RE 95 ms 256 KB
sub2in20.txt AC 1 ms 256 KB
sub2in21.txt WA 1 ms 256 KB
sub2in22.txt WA 1 ms 256 KB
sub2in23.txt AC 1 ms 256 KB
sub2in24.txt WA 1 ms 256 KB
sub2in3.txt RE 96 ms 256 KB
sub2in4.txt RE 96 ms 256 KB
sub2in5.txt RE 95 ms 256 KB
sub2in6.txt RE 96 ms 256 KB
sub2in7.txt RE 96 ms 256 KB
sub2in8.txt AC 1 ms 256 KB
sub2in9.txt WA 1 ms 256 KB
subin1.txt WA 17 ms 3456 KB
subin10.txt WA 17 ms 3456 KB
subin101.txt WA 17 ms 3456 KB
subin102.txt WA 15 ms 3456 KB
subin103.txt WA 14 ms 3456 KB
subin104.txt WA 14 ms 3456 KB
subin105.txt WA 14 ms 3456 KB
subin106.txt WA 14 ms 3456 KB
subin107.txt WA 15 ms 3456 KB
subin108.txt WA 15 ms 3456 KB
subin109.txt WA 15 ms 3456 KB
subin11.txt WA 17 ms 3456 KB
subin12.txt WA 18 ms 3456 KB
subin13.txt WA 17 ms 3456 KB
subin14.txt WA 17 ms 3456 KB
subin15.txt WA 16 ms 3456 KB
subin16.txt WA 16 ms 3456 KB
subin17.txt WA 16 ms 3456 KB
subin18.txt WA 16 ms 3456 KB
subin19.txt WA 16 ms 3456 KB
subin2.txt AC 16 ms 3456 KB
subin20.txt WA 16 ms 3456 KB
subin201.txt AC 1 ms 256 KB
subin21.txt WA 13 ms 3456 KB
subin22.txt WA 13 ms 3456 KB
subin23.txt WA 13 ms 3456 KB
subin24.txt AC 13 ms 3456 KB
subin3.txt AC 18 ms 3456 KB
subin4.txt AC 15 ms 2944 KB
subin5.txt WA 17 ms 3456 KB
subin6.txt WA 16 ms 3456 KB
subin7.txt AC 16 ms 2560 KB
subin8.txt AC 11 ms 1920 KB
subin9.txt WA 18 ms 3456 KB