#include <stdio.h> int main() { int n; int a1,a2; int min=0; int cap=0; scanf("%d",&n); while(n>0) { scanf("%d %d",&a1,&a2); cap-=a1; cap+=a2; if(min<cap) min=cap; --n; } printf("%d\n",min); return 0; }
#include <stdio.h> int main() { int n; int a1,a2; int min=0; int cap=0; scanf("%d",&n); while(n>0) { scanf("%d %d",&a1,&a2); cap-=a1; cap+=a2; if(min<cap) min=cap; --n; } printf("%d\n",min); return 0; }