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Submission #113405

# Submission time Handle Problem Language Result Execution time Memory
113405 2019-05-25T12:04:20 Z TadijaSebez Sails (IOI07_sails) C++11
30 / 100
 1000 ms 1024 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N=100050;
int sum[N],cnt[N];
ll suf[N];
int main()
{
	int n,h,k,mxh=0;
	scanf("%i",&n);
	for(int i=1;i<=n;i++)
	{
		scanf("%i %i",&h,&k);
		cnt[h]++;
		sum[h-k+1]++;
		sum[h+1]--;
		mxh=max(mxh,h);
	}
	for(int i=1;i<=mxh;i++) sum[i]+=sum[i-1];
	while(1)
	{
		bool ok=0;
		for(int i=mxh-1;i>=1;i--) if(sum[i]<sum[i+1]) sum[i]++,sum[i+1]--,ok=1;
		if(!ok) break;
	}
	ll ans=0;
	for(int i=1;i<=mxh;i++) ans+=(ll)sum[i]*(sum[i]-1)/2;
	/*for(int i=mxh;i>=1;i--) suf[i]=suf[i+1]+(ll)sum[i]*(sum[i]-1)/2;
	ll tmp=0,ans=suf[1];
	for(int i=1;i<=mxh;i++)
	{
		tmp+=sum[i];
		ll all=tmp/i,ost=tmp%i;
		ll now=suf[i+1]+(i-ost)*all*(all-1)/2+ost*all*(all+1)/2;
		ans=min(ans,now);
	}*/

	printf("%lld\n",ans);
	return 0;
}

Compilation message

sails.cpp: In function 'int main()':
sails.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i",&n);
  ~~~~~^~~~~~~~~
sails.cpp:13:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i",&h,&k);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 17 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 18 ms 368 KB Output is correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1006 ms 384 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1064 ms 512 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1040 ms 640 KB Time limit exceeded

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1070 ms 640 KB Time limit exceeded

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1073 ms 768 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1083 ms 1024 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1066 ms 1024 KB Time limit exceeded
2 Halted 0 ms 0 KB -