Submission #510071

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Source Code Expand

#include<cstdio>
#include<cstring>
#include<cctype>
#include<cmath>
#include<climits>
#include<algorithm>
#include<vector>
#include<valarray>
#include<string>
#include<set>
#include<map>
#include<stack>
#include<queue>
using namespace std;
  
  
#define rep(i,n) for(int i=0;i<n;i++)
#define REP(i,n) for(int i=1;i<=n;i++)
#define drep(i,n) for(int i=n-1;i>=0;i--)
#define DREP(i,n) for(int i=n;i>0;i--)
#define Rep(i,m,n) for(int i=m;i<n;i++)
#define scani(a) scanf("%d",&a)
#define scand(a) scanf("%lf",&a)
#define scans(s) scanf("%s",s)
#define readi(a) int a;scanf("%d",&a)
#define printi(a) printf("%d",a)
#define prints(s) printf("%s",s)
#define even(n) (((n)+1)%2)
#define odd(n) ((n)%2)
#define sg(x) ((x)?1:0)
#define LF printf("\n")
#define SPACE printf(" ")
#define pb push_back
#define mp make_pair
#define bs binary_search
#define all(a) (a).begin(),(a).end()
#define MOD 100000007
  
typedef long long LL;
typedef vector<int> vi;
typedef vector<vector<int> > vvi;
typedef pair<double,double> pdd;
typedef pair<int,int> pii;
  
const double pi=acos(-1.0);
double rad(double t){return t*pi/180.0;}
double deg(double d){return d*180.0/pi;}
int GCD(int x,int y){if(x<y)swap(x,y);return x%y?GCD(y,x%y):y;}
int LCM(int x,int y){return x/GCD(x,y)*y;}


int main(){
  readi(N);
  readi(T);
  T=-T;

  vi times;

  rep(i,N){
    readi(A);readi(B);
    T+= A;
    times.pb(A-B);
  }

  sort(all(times));

  int i;

  if(T<=0)printf("0\n");
  else{
    for(i=1;i<=N;i++){
      //printf("times[%d]=%d\n",N-i,times[N-1]);
      T -= times[N-i];
      if(T<=0)break;
    }

    if(T>0)printf("-1\n");
    else printf("%d\n",i);
  }

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:53:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   readi(N);
           ^
./Main.cpp:54:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   readi(T);
           ^
./Main.cpp:60:13: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     readi(A);readi(B);
             ^
./Main.cpp:60:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     readi(A);readi(B);
                      ^

Judge Result