Submission #1566229
Source Code Expand
#include<bits/stdc++.h> using namespace std; int read() { int ans=0; char ch=getchar(); for(;(ch<'0' || ch>'9') && ch!='-';ch=getchar()); bool flag=0; if(ch=='-')flag=1,ch=getchar(); for(;ch>='0' && ch<='9';ch=getchar())ans=ans*10+ch-'0'; if(flag)ans=-ans; return ans; } long long rell() { long long ans=0; char ch=getchar(); for(;(ch<'0' || ch>'9') && ch!='-';ch=getchar()); bool flag=0; if(ch=='-')flag=1,ch=getchar(); for(;ch>='0' && ch<='9';ch=getchar())ans=ans*10ll+(long long)(ch-'0'); if(flag)ans=-ans; return ans; } void writ(int n) { char ch[25]; int m=0; if(n<0)putchar('-'),n=-n; if(n==0) { putchar('0'); return; } for(;n;n/=10)ch[m++]=n%10ll+'0'; for(;m;)putchar(ch[--m]); } void wrll(long long n) { char ch[25]; int m=0; if(n<0)putchar('-'),n=-n; if(n==0) { putchar('0'); return; } for(;n;n/=10ll)ch[m++]=n%10ll+'0'; for(;m;)putchar(ch[--m]); } const int N=1<<8; const int mod=998244353; int x[N],y[N],po[N]; int main() { int n; scanf("%d",&n); po[0]=1; for(int i=0;i<n;i++) { x[i]=read();y[i]=read(); po[i+1]=po[i]*2ll%mod; } int ans=(po[n]-1-n+mod)%mod; for(int i=0;i<n;i++) { for(int j=i+1;j<n;j++) { int sum=0,a=y[i]-y[j],b=x[j]-x[i],c=x[i]*y[j]-x[j]*y[i]; for(int k=j+1;k<n;k++) { if(x[k]*a+y[k]*b+c==0)sum++; } (ans+=mod-po[sum])%=mod; //printf("i=%d j=%d sum=%d\n",i,j,sum); } } printf("%d\n",ans); return 0; }
Submission Info
Submission Time | |
---|---|
Task | E - ConvexScore |
User | bx2k |
Language | C++14 (GCC 5.4.1) |
Score | 700 |
Code Size | 1505 Byte |
Status | AC |
Exec Time | 3 ms |
Memory | 256 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:62:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 700 / 700 | ||||
Status |
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Set Name | Test Cases |
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Sample | 0_000.txt, 0_001.txt, 0_002.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt, 1_023.txt, 1_024.txt, 1_025.txt, 1_026.txt, 1_027.txt, 1_028.txt, 1_029.txt, 1_030.txt, 1_031.txt, 1_032.txt, 1_033.txt, 1_034.txt, 1_035.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 1 ms | 256 KB |
0_001.txt | AC | 1 ms | 256 KB |
0_002.txt | AC | 1 ms | 256 KB |
1_003.txt | AC | 1 ms | 256 KB |
1_004.txt | AC | 1 ms | 256 KB |
1_005.txt | AC | 2 ms | 256 KB |
1_006.txt | AC | 1 ms | 256 KB |
1_007.txt | AC | 2 ms | 256 KB |
1_008.txt | AC | 2 ms | 256 KB |
1_009.txt | AC | 2 ms | 256 KB |
1_010.txt | AC | 1 ms | 256 KB |
1_011.txt | AC | 2 ms | 256 KB |
1_012.txt | AC | 2 ms | 256 KB |
1_013.txt | AC | 2 ms | 256 KB |
1_014.txt | AC | 1 ms | 256 KB |
1_015.txt | AC | 2 ms | 256 KB |
1_016.txt | AC | 1 ms | 256 KB |
1_017.txt | AC | 3 ms | 256 KB |
1_018.txt | AC | 3 ms | 256 KB |
1_019.txt | AC | 3 ms | 256 KB |
1_020.txt | AC | 3 ms | 256 KB |
1_021.txt | AC | 3 ms | 256 KB |
1_022.txt | AC | 3 ms | 256 KB |
1_023.txt | AC | 3 ms | 256 KB |
1_024.txt | AC | 3 ms | 256 KB |
1_025.txt | AC | 3 ms | 256 KB |
1_026.txt | AC | 3 ms | 256 KB |
1_027.txt | AC | 3 ms | 256 KB |
1_028.txt | AC | 3 ms | 256 KB |
1_029.txt | AC | 3 ms | 256 KB |
1_030.txt | AC | 3 ms | 256 KB |
1_031.txt | AC | 3 ms | 256 KB |
1_032.txt | AC | 3 ms | 256 KB |
1_033.txt | AC | 3 ms | 256 KB |
1_034.txt | AC | 3 ms | 256 KB |
1_035.txt | AC | 3 ms | 256 KB |